AP Physics 1 Fall Break Review

On this graph what is the displacement of the object between 0 seconds and 9  seconds of time.

 $Area\ ofa\ triangle:\ A=\frac{1}{2}b\times h$   $Area\ of\ a\ rec\tan gle:\ A=l\times w$  

• 10 m

• 20 m

• 25 m

• 55 m

How does her speed at 3 minutes compare with her speed at 7 minutes?

• She is driving faster at 3 minutes.

• She is driving faster at 7 minutes

• She is driving forward at 3 minutes and backwards at 7 minutes.

• She is moving up at 3 minutes and down at 7 minutes

What is the vertical velocity of a projectile at the apex of the trajectory?

• 0 m/s

• 9.8 m/s

• 9.8 m/s²

• -9.8 m/s²

Does vertical velocity change as a projectile rises and falls?

• yes 
• no

If you throw at 7m/s at 15 degrees above the horizontal, what is its magnitude of the vertical acceleration at the highest point?

• 9.8 m/s²

• 9.8 m/s

• 0 m/s²

• 0 m/s

A cannonball is fired at a 45.0° angle and an initial velocity of 625 m/s. Assume no air resistance. What is the vertical component of the cannonball’s velocity? What is the horizontal component of the cannonball’s velocity?

• -625 m/s; 625 m/s

• 441.9 m/s; 441.9 m/s

• -441.9 m/s; 441.9 m/s

• 9.8 m/s; 0 m/s

A cannonball is fired at a 45.0° angle and an initial velocity of 625 m/s. Assume no air resistance. How long until the cannonball hits the ground?

• 75.4 s
• 45.2 s
• 62.3 s
• 90.2 s

Tags

NGSS.HS-PS2-4

If a bullet is horizontally shot at the same moment another bullet is dropped from the same height, which will hit the ground first?(neglect air resistance) 

• Shot Bullet
• Dropped Bullet
• Hit at Same Time

A cat kicks a vase with a horizontal velocity of 1.6 m/s off a shelf 2.5 m above the ground. How far from the shelf does the vase hit the ground?

• 1.6 m

• 0.8 m

• 0.7 m

• 1.1 m

If an object is traveling at constant velocity on a friction surface, which two forces will be equal?

• weight and net

• applied and frictional

• net and frictional

• net and applied