Arizona State University (ASU) PHY 101 Introduction to Physics Exam 1 Practice

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• In the Moon-Earth system, the Moon's diameter is how large relative to the distance to the Moon?
• Newton's Second Law is commonly written as which formula?
• A mass 0.5 kg is pushed by a constant 4 N force for 2 s on a frictionless surface. What is the final velocity if initial velocity is 0?
• If the mass is doubled to 1.0 kg but height remains 2 m, what is the speed just before impact?
• In Newton's equations, what is the role of the constant G in ensuring consistency of units?
• A vertically launched projectile with initial speed 6 m/s has a maximum height h. What is h?
• Do rubber bands used in these experiments obey a perfect Hooke's law?
• What is the net force?
• If the net force acting on a fixed-mass object is doubled, what happens to its acceleration?
• Which statement best differentiates average speed from average velocity, and when can they differ?
• If the starting height is 0.5 m, what is the speed just before impact?
• A ball is dropped from rest from height h. What is its speed just before impact?
• How does a helicopter get its lifting force?
• Which equation correctly relates velocity, gravitational acceleration, and height for this drop, with mass canceled?
• A 2 kg block slides down a frictionless track from height 5 m. What is its speed at the bottom?
• Which of the following is a vector quantity?
• What would be the magnitude of the gravitational field anywhere inside a hollow, spherical planet?
• Doubling the applied force on a body with the same mass results in what change to acceleration?
• What is the work done when you push a crate horizontally with 120 N across a 15 m floor?
• If the height is quadrupled, what happens to the speed just before impact for a free-falling object from rest?
• Ignoring air resistance, how does the acceleration of two objects of different mass dropped from the same height compare?
• In an elevator moving upward at constant speed, what is the net acceleration of the person relative to the elevator?
• What does a speedometer measure?
• In a frictionless environment, when no external push is applied, the object in motion will:
• Define momentum. If a 0.5 kg mass moves at 4 m/s, what is its momentum?
• Which statement about work done by friction is true?
• What is the test for whether a hypothesis is scientific or not?
• Which statement is true about gravity inside a hollow spherical planet? At any interior point, the gravitational field is:
• State the work-energy theorem.
• Which scenario illustrates Newton's First Law?
• If height increases from 2 m to 8 m, by what factor does the impact speed increase?
• A body is in mechanical equilibrium when what condition is satisfied?
• Which statement best compares static friction and sliding friction on the same object?
• If the elevator is accelerating downward, how does the scale reading compare to the person's weight?
• If the elevator is accelerating upward, how does the scale reading compare to the person's weight?
• Which statement about static friction on the same surface is true?
• In the context of planetary motion, retrograde is best described as:
• A block on a horizontal surface experiences kinetic friction with μ_k = 0.30 and normal force N = 15 N. What is the kinetic friction force?
• When you hang one reference object from a rubber band you obtain one unit of deformation. If you hang this system from another rubber band so that you have two rubber bands, vertical, one after another, what is the deformation of the bands?
• When the ends of the two rubber bands are pulled apart to form a 30-degree angle with the horizontal, how does the tension in each band compare to the original side-by-side configuration?
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• A car with mass 1000 kg reaches a speed of 20 m/s. What is its kinetic energy?
• The work done by a constant force F at an angle θ to the displacement d is given by which expression?
• If an object's velocity remains constant, what can be said about the net force?
• How does Ptolemy's geocentric model explain retrograde motion?
• What is the magnitude of the impulse delivered to the ball in the first scenario?
• If a particle with speed v0 is launched at angle θ above the horizontal, the horizontal component of the initial velocity is:
• A runner completes a loop and ends at the starting point. How do the average speed and the magnitude of average velocity compare?
• How does the scale reading change when gravitational acceleration g increases for a person standing stationary on a scale?
• What are the steps of the scientific method as commonly described?
• What is the SI unit of pressure?
• In the drag scenario described, which variable is most important in determining the drag force?
• Why doesn't a heavier object accelerate more than a lighter object when both are freely falling near Earth's surface?
• A 0.5 kg ball is released from rest at height 2.0 m. Ignoring air resistance, what is speed just before impact?
• Which condition would produce a scale reading greater than the object's weight?
• Which statement best distinguishes displacement from distance?
• What is the direction and characteristic of gravity's acceleration on a projectile's vertical motion?
• A length is measured with a ruler marked every 1 mm and the reading is 12.3 cm. What is the estimated uncertainty of the measurement?
• Which statement best describes terminal velocity?
• A force of 5 N acts at 60° to the horizontal as a displacement of 3 m to the right occurs. What is the work done by the force?
• A mass moves in a horizontal circle of radius r with speed v. What is the centripetal acceleration?
• Shaking a box back and forth primarily measures which quantity?
• Mechanical equilibrium: Which statement is true?
• A 1 kg mass moving at 2 m/s collides elastically with a wall and rebounds with 2 m/s to the left. What is the impulse delivered to the wall?
• What distance does an object fall in 1 second under g = 10 m/s^2?
• Which statement correctly relates work and energy for a force acting on a particle, assuming no non-conservative losses?
• Which of the following best defines a baseline in triangulation methods?
• In pinhole imaging, which principle is demonstrated by the tiny light spots under the tree?
• If two identical rubber bands are placed in series to support the same load, how does the deformation in each band compare?
• A car changes speed from 20 m/s to 0 in 5 s. What is the average acceleration?
• Dynamic equilibrium is defined as?
• When you stretch a rubber band with two fingers, how many forces are acting on the band due to your hands?
• A crate is pushed horizontally with 100 N across a 10 m floor; friction between the crate and the floor is 70 N. How much kinetic energy is gained by the crate?
• An elevator is moving upward at a constant speed. How does the scale reading compare to the person's weight?
• Which statement best describes the difference between precision and accuracy in measurements?
• When the Sun was directly overhead in Syene, why wasn't it directly overhead in Alexandria?
• In a non-accelerating frame (elevator at rest or moving with constant velocity), which statement about scale reading is true?
• Which of the following is an essential component used to triangulate the distance to an object across a river?
• Static equilibrium is defined as?
• Which statement correctly describes the scale reading when the elevator is moving upward at a constant speed?
• You pull one rubber band with one finger from each hand until it shows 2 units of deformation. Which combination of rubber bands produces the same force on your fingers?
• The Sun's diameter is what fraction of the distance from the Earth to the Sun?
• In the absence of friction, if an object moves to the left and slows down, what is the direction of the net force?
• Which statement is always true about displacement and distance for a particle moving along a path?
• In the classic experiment with two objects of different mass dropped from the same height, neglecting drag, why do they hit the ground at the same time according to Newton's second law?
• The dot product of vectors A = (3, 4) and B = (−4, 3) is zero. What does this imply about the angle between them?
• If the ball collides with the ground and comes to rest almost instantly, what is the impulse delivered (in kg m/s)?
• In the absence of air resistance, two objects of different masses dropped from rest will have what acceleration?
• A car starts from rest with constant acceleration of 3.0 m/s^2 for 5.0 s. What is its final velocity?
• In a scenario where you observe a deformation of size 3 for the first object, and then you replace it with a different object made of different materials but observe the same deformation, what can you say about the masses?
• What is the momentum just before impact for a 0.5 kg ball hitting the ground with speed 6.26 m/s?
• A rubber band is used to hold an object at rest. What is the net force on the rubber band?
• Pushing an object from the left results in what type of motion?
• If the net force on an object is zero, what is its acceleration?
• A block on a horizontal surface has μ_s = 0.4. If the normal force is 19.6 N, what is the maximum static friction?
• In an isolated two-body collision, which physical quantity remains constant?
• Which statement correctly expresses Newton's second law in base SI units?
• In a perfectly elastic collision, which quantities are conserved?
• Which of the following is a scalar quantity?
• 1 Newton is equal to which expression?
• Which expression gives the kinetic energy at the bottom of a frictionless track for mass m and height h?
• In the falling ball described, which statement correctly describes energy conservation?
• A pendulum has period T = 2π√(L/g). If L = 0.5 m, what is T (take g = 9.8 m/s^2)?
• What is the momentum of a 3 kg mass moving at 2 m/s?
• Which statement defines a scalar quantity?
• What is the kinetic energy just before impact?
• If the drop height is halved to 1.0 m, what is the speed just before impact (ignoring air resistance)?
• You use two rubber bands side by side to hold an object. Then, the bands are pulled apart so they are not vertical anymore. Compared to the original side-by-side case, the tension in the bands is:
• A spring with k = 50 N/m is compressed by x = 0.2 m. What is the potential energy stored?
• Which statement best distinguishes science from technology?
• Inside a hollow spherical shell, what is the gravitational field magnitude at any interior point?
• If the same push is applied to objects of different mass, what changes?
• A 1 kg mass experiences a net force of 9.8 N downward. What is the acceleration and its direction?
• In an experiment with a single fixed mass, how is Newton's second law demonstrated?
• In the frictionless conditions after pushing stops, what is the observed motion?
• In a vacuum, how does velocity of a freely falling object change with time?
• The circular spots of light seen on the ground beneath a tree on a sunny day are called what?
• A mass m is at rest on a frictionless horizontal surface. A constant horizontal force F is applied for time t. What is the resulting velocity after time t?
• How does gravity affect the vertical motion of a projectile?
• What is Copernicus' heliocentric theory?
• What determines whether air resistance affects the motion of a falling object?
• A 2 kg object is raised by 5 m. What is the increase in gravitational potential energy?
• A ball of mass 0.5 kg travels toward a wall at 3 m/s. After an elastic bounce, it leaves at 2 m/s in the opposite direction. What is the impulse imparted to the ball?
• What is Ptolemy's geocentric theory?
• A 2 kg mass moves with speed 3 m/s. What is its kinetic energy?
• If three forces act on an object and their vector sum is zero, what is the object's acceleration?
• How does acceleration depend on the net force?
• Which scenario demonstrates Newton's first law in the frictionless force lab?
• A projectile is launched horizontally from a height of 20 m with an initial horizontal speed of 15 m/s. How long does it take to hit the ground?
• A person lifts a 5 kg mass by 2 meters. What is the work done by the lifter (excluding nonconservative forces)?
• Convert 2500 m to kilometers.
• A 0.2 kg ball moving at 5 m/s strikes a wall and rebounds at 4 m/s in the opposite direction, with a contact time of 0.02 s. What is the impulse delivered to the wall?
• What is the kinetic energy just before impact for a 1.0 kg mass dropped from 2 m?
• A force F acts on a particle and the particle moves with velocity v. What is the instantaneous power delivered by the force?
• Which statement best describes science?
• How does Copernicus' heliocentric model explain retrograde motion?
• If the path from start to end is a straight line, what is true about displacement and distance?
• Between a flat sheet of paper and a crumpled ball dropped from the same height, which reaches the ground first in air with drag considered?
• If the cross-sectional area of an object doubles, what happens to the drag?
• From height 5 m, what is the speed just before impact?
• How does the force of friction for a sliding object vary with speed?
• What height is required to reach speed 8 m/s just before impact, ignoring air resistance?
• Define weight and normal force. For a block on an incline of angle θ with no friction, what is the normal force?
• If you push a crate with a horizontal force of 120 N and it slides at constant velocity, what is the friction acting on the crate?
• Newton's First Law is best described by which statement?
• A 5 kg mass at rest has 20 J of net work done on it. Its final speed is closest to which value?
• A 0.5 kg ball changes velocity from 2 m/s to −3 m/s in 0.02 s. What is the impulse delivered to the ball?
• The force of gravity on falling objects arises from interactions between pairs of objects. Which object is responsible for creating the gravity observed on a falling object?
• On an incline with kinetic friction μ_k, what is the expression for the acceleration of a block moving down the incline?
• In uniform circular motion, the centripetal acceleration is directed toward which location?
• On the surface of a planet, when the platform is at rest, the scale reads:
• A spring with k = 50 N/m is compressed by x = 0.2 m. What is the potential energy stored?
• For an object with fixed mass, how does acceleration depend on the net force?
• A 0.1 kg ball is pushed with 2 N for 0.5 s. What is the impulse and resulting change in velocity if the initial velocity is 1 m/s?
• If a velocity–time graph is a straight line with slope m, what does the slope represent?
• In the frictionless push experiment, the object stops accelerating and eventually stops being pushed when:
• Which criterion should a scientific hypothesis meet?
• In the experiment you observed and measured the lengths of the band under different forces. Which set of lengths for forces of magnitude 0, 1, 2, 3 would more likely correspond to an actual band (not obeying a perfect Hooke's law)?:
• What is the instantaneous power delivered by force F acting on a particle moving with velocity v?
• A pendulum with length L = 0.25 m. What is the period T?
• A car accelerates from rest to 20 m/s in 5 s with a mass of 1000 kg. If all the work goes into kinetic energy, what is the average power?
• If a particle has velocity 5 m/s to the right and acceleration 2 m/s^2 to the left, what is happening to its speed?
• Which expression gives the vertical component of the initial velocity for a projectile launched at speed v0 with angle θ above the horizontal?
• If the elevator is accelerating downward, how does the scale reading compare to the man's weight?
• Which model places the Sun at the center of the solar system?
• Total mechanical energy at the top (mass 0.5 kg, height 2 m) released from rest?
• Which statement best defines a vector quantity?
• An elevator is moving downward at a constant speed. How does the scale reading compare to the person's weight?
• State the conservation of mechanical energy for a frictionless system.
• Which scenario best demonstrates Newton's Second Law?
• When you push an object from the left, what type of motion is observed?
• A 3 kg object is raised from height 1 m to 4 m. What is the increase in gravitational potential energy?
• What is the gravitational potential energy of a mass m at height h above a reference level?
• An object on a frictionless incline has acceleration a = g sin θ. What is a for θ = 60°?
• What two units describe speed?
• If the potential energy of the block at the table is mgh/3, this implies that the chosen zero level of potential energy is __________.
• Newton's Third Law states which of the following?
• In a configuration where two bands support a weight at an angle, which component of the tension provides the vertical support for the weight?
• What is the magnitude of acceleration during the fall ignoring air resistance?
• At terminal velocity, what is true about the net force on the object?
• What is planetary retrograde?
• An object on an inclined plane with angle θ slides down with acceleration a = g sin θ if frictionless. What is the acceleration for θ = 30°?
• What are the units of the slope of a velocity–time graph?
• Two objects are dropped from heights of 2 meters and 1 meter respectively, neglecting drag. Which hits the ground first?
• For static friction, f_s,max = μ_s N. If μ_s = 0.5 and N = 10 N, what is f_s,max?
• If the force of friction on the crate is a steady 70 N, and you push with 120 N over a 15 m floor, what is the kinetic energy gained?
• Which units express force?
• A cart travels 4.0 m in 2.0 s. What is its average speed?
• A projectile is launched at 60 degrees with speed 20 m/s. What are the horizontal and vertical components of the initial velocity?
• A force of 6 N acts parallel to a displacement of 2 m. What is the work done by the force?
• A 0.3 kg ball is thrown straight up with initial velocity 6 m/s. What is the maximum height reached?
• If an object falls freely under gravity g = 10 m/s^2, how long does it take to fall 2 meters?
• When two rubber bands are placed side by side to hold a weight and then pulled apart so they form a 30-degree angle with respect to the horizontal, what deformation is observed in each band?
• Newton's second law: If a 5 kg block experiences a net force of 10 N, what is its acceleration?