AP Physics Dynamics

A force of 8 Newton’s is applied to a crate so that it moves at a constant velocity of 1.5 m/s. What is the net force?

• 1.5 N

• 8 N

• 12N

• 0 N

Tags

NGSS.MS-PS2-2

What happens to the acceleration of an Atwood machine as the difference between the two masses increases?

• increases

• decreases

• does not change

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Which of these is a correct sum statement for Fx?

• Fa - Ff = ma

• Fnet = Ff

• Fn/Fg

• Fa = ma

Tags

NGSS.MS-PS2-2

What's happening in this FBD?

• Forward acceleration

• Braking

• at rest

• constant velocity

Tags

NGSS.HS-PS2-1

A drag racer accelerated from 0 m/s to 200 m/s in 5 s.  What was the acceleration?

• 0 m/s

• 40 m/s²

• -40 m/s²

• 40 m/s

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A roller coasters accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?

• 24 m/s²

• 18 m/s²

• 16 m/s²

• 16 m/s

Tags

NGSS.MS-PS2-2

A cannonball is fired with an initial velocity of 100. meters per second at an angle of 15.0° above the horizontal. What are the horizontal (v_x) and vertical (v_y) components of this velocity?

v_x = ​ (a)  

v_{y =} ​ (b)  

• 25.9 m/s

• 99.6 m/s

• 76.0 m/s

• 65.0 m/s

Here are 3 FBD diagrams for an elevator. Consider them to be A, B, C. Which one shows an elevator accelerating upward?

• A

• B

• C

• none of these

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Here are 3 FBD diagrams for an elevator. Consider them to be A, B, C. Which one shows an elevator at rest?

• A

• B

• C

• none of these

Here are 3 FBD diagrams for an elevator. Consider them to be A, B, C. Which one shows an elevator moving upward but braking?

• A

• B

• C

• none of these

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5