AP Physics 1 Review

A person throws a marble straight up into the air, releasing it a short height above the ground and catching it at that same height. If air resistance is negligible, which of the following graphs of position y versus time t is correct for the motion of the marble as it goes up and then comes down?

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• 

Tags

NGSS.HS-PS2-4

A person is running on a track. Which of the following forces propels the runner forward?

• The normal force exerted by the ground on the person

• The normal force exerted by the person on the ground

• The force of friction exerted by the ground on the person

• The force of friction exerted by the person on the ground

Tags

NGSS.HS-PS2-1

A rock attached to a string swings in a vertical circle, as shown above, with negligible air resistance. Which of the following diagrams could correctly show all the forces on the rock when the string is in the position above?

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• 

Tags

NGSS.HS-PS2-1

Which of the following is constant for an object in uniform circular motion?

• Velocity

• Acceleration

• Displacement

• Kinetic Energy

Ball X of mass 1.0 kg and ball Y of mass 0.5 kg travel toward each other on a horizontal surface. Both balls travel with a constant speed of 5 m/s until they collide. During the collision, ball Y exerts an average force with a magnitude of 40 N for ⅙ second on ball X. Which of the following best predicts ball Y's momentum after the collision?

• Ball Y will travel at a speed less than 5 m/s in the same direction of travel as before the collision.

• Ball Y will travel at a speed less than 5 m/s in the opposite direction of travel as before the collision.

• Ball Y will travel at a speed greater than 5 m/s in the opposite direction of travel as before the collision.

• Ball Y's motion cannot be predicted because the impulse on it is not known.

Tags

NGSS.HS-PS2-2

An object of mass m attached to a spring with constant k oscillates with amplitude A. Assuming air resistance and the mass of the spring to be negligible, which of the following changes alone would cause the period of this oscillation to increase?

I. Increasing m

II. Increasing A

III. Using a spring with greater k

• I only

• II only

• III only

• I or III

• II or III

An object begins at position x = 0 and moves one-dimensionally along the x-axis with a velocity v expressed as a function of time t according to the graph above. At what time does the object pass through x = 0 again?

• Between 10 s and 20 s

• Between 20 s and 30 s

• At exactly 30 s

• Between 30 s and 40 s

A 2-kg object is a distance of 10,000,000 meters away from the center of Earth, which has a mass of nearly 6 × 10²⁴ kg. What is the approximate gravitational field strength of Earth’s gravitational field at the location of the 10-kg object?

• 2 N/kg

• 4 N/kg

• 10 N/kg

• The gravitational field strength is negligible and, therefore, approximately zero.

Tags

NGSS.HS-PS2-4

A cart is going around a circular loop, as shown in the figure. The cart moves with the smallest speed necessary to stay in contact with the loop to complete a circular path at point 1. What is the speed of the cart at point 2?

• zero

Tags

NGSS.HS-PS2-1

NGSS.HS-PS3-1

A spacecraft of mass 4000 kg is traveling in a straight line in the positive direction. Engines can be fired so that the force exerted on the spacecraft is in the positive or negative direction. The graph above shows data for the force during one interval. Which of the following is the best estimate of the net change in the speed of the spacecraft from time t = 0 to time t = 4 s?

• + 0.4 m/s

• + 0.1 m/s

• - 0.1 m/s

• - 0.4 m/s

Tags

NGSS.HS-PS2-1