AP Physics C

Two asteroids exert a gravitational force, F, on each other. Some time later, the asteroids are now three times as far from each other as before. Which of the following represents the gravitational force at this distance?

• F/3

• F/2

• F/6

• F/9

Tags

NGSS.HS-PS2-4

Centripetal acceleration is the acceleration…

• Away from the center of the circle

• When an object is going straight

• Toward the center of a circle

• That doesn’t exist

A particle P is moving in a circle with uniform speed. Which one of the following diagrams correctly shows the direction of the acceleration a and velocity v of the particle at one instant of time?

• A

• B

• C

• D

Which statement is true about an object that is traveling in uniform circular motion?

• The speed of the object varies.

• The net force on the object is directed toward the center of the circular path.

• The direction of the object's velocity is constant.

• The net force on the object is directed away from the center of the circular path.

A pilot experiences centripetal acceleration of 2g's while maneuvering a loop at a speed of 400 m/s.  What is the radius of the loop?

• 203 m

• 8163 m

• 80,003 m

• 23 m

Tags

NGSS.HS-PS2-1

Which of the following is the unit for centripetal force?

• J

• m/s²

• kg⋅m/s

• N

Tags

NGSS.HS-PS2-1

A 50 g model airplane travels in a circle with a radius of 100m, the plane's velocity while moving is 50m/s, at a frequency of 5 spins per 9 seconds, What is the proper equation to use to solve for the Centripetal force?

• Fc = mv² / r

• Fc = 4π²mr / T²

• Fc = 4π²mrf²

• Fc = ma

Tags

NGSS.HS-PS2-1

Which of the following ranks the tensions in the strings from highest to lowest?

• A>C>D>B

• B>D>C>A

• B>C>A>D

• D>A>C>B

Tags

NGSS.HS-PS2-1

How do you compare the gravitational force of A from B?

• gravitational force of A is twice that of B

• gravitational force of A is half compared to B

Tags

NGSS.HS-PS2-4

How does the speed in Case A compare to the speed in Case B?

• two times

• one fourth times

• four times

• one half times

Tags

NGSS.HS-PS2-1