AP Physics Unit 1 Review

Three equal masses are suspended from a classroom ceiling by a series of strings as shown in the figure. Which string has the greatest tension?

• Only String A

• Only String B

• Only String C

• Strings A, B, and C have the same non-zero tension

Tags

NGSS.HS-PS2-1

A simple pendulum consists of a massive bob connected to the end of a very light string. Which one of the following changes should be made in order to increase the period of the pendulum? Ignore air resistance.

• Increase the mass of the bob

• Decrease the mass of the bob

• Increase the length of the string

• Decrease the length of the string

Two bodies of equal mass are moving in circular paths at equal speed. The first body moves in a circle whose radius is twice that of the second. The ratio of the radial acceleration of the first body to that of the second is:

• 1 to 4

• 1 to 3

• 1 to 2

• 1 to 1

A car is moving along a straight horizontal road at a speed of 20 m/s. The brakes are applied and a constant force of 5000 N brings the car to a stop in 10 s. What is the mass of the car?

• 1250 kg

• 2500 kg

• 5000 kg

• 7500 kg

Tags

NGSS.HS-PS2-1

Two forces have magnitudes of 11.0 N and 5.0 N. The magnitude of their sum could NOT be equal to which of the following values?

• 16.0 N

• 9.0 N

• 7.0 N

• 5.0 N

Tags

NGSS.MS-PS2-2

A fisherman watches a dolphin leap out of the water at an angle of 35o above the horizontal. The horizontal component of the dolphin’s velocity is 7.7 m/s. Find the magnitude of the vertical component of the velocity.

• 4.4 m/s

• 6.3 m/s

• 11 m/s

• 5.4 m/s

A force, F, could be applied to a cart in a variety of directions as shown at right. Which of the applications of F would result in no work being done?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Two separate simple pendulums are swinging back and forth. It is found that pendulum A has twice the frequency of pendulum B. Which statement could account for this difference?

• Pendulum B is twice as long as pendulum A.

• Pendulum B was released before pendulum A.

• Pendulum B is twice as massive as pendulum A.

• The length of pendulum B is four times the length of pendulum A.

Tags

NGSS.HS-PS4-1

A spring loaded projectile launcher launches a plastic ball horizontally with a speed of 4.0 m/s. If the spring were compressed twice as far, the ball’s launch speed would be

• 2.0 m/s

• 4.0 m/s

• 8.0 m/s

• 16 m/s

Tags

NGSS.HS-PS2-1

Consider a situation where the acceleration of an object is always directed perpendicular to its velocity. This means that

• the object is increasing speed.

• the object is decreasing speed

• the object is not moving.

• the object is turning.