Physics Review & Extra Credit

A ball kicked horizontally with an initial speed of 30 m/s. if the situation asks to find the distance covered, we should solve for _______.

• d_x

• d_y

• v_x

• v_y

A coin tossed vertically upward and it reaches the highest point in 7.0s. at the highest point, the velocity is _______.

• 9.8 m/s

• 0

• 9.8 m/s² 

• 98 m/s²

The following quantities are important in the study of a projectile motion EXCEPT ______.

• speed of the projectile

• mass of the projectile

• height of release

• time covered

• A

• B

• C

• D

What force acts in the y direction that causes an object to follow a parabolic path?

• tension

• friction

• gravity

• no force

• (a) 5 sec

• (b) 7sec

• (c) 3 sec

• (d) 10 sec

Which vector pair (arrow pair) correctly represents the acceleration and velocity at point P?

• 
• 
• 
• 

Which section of the graph shows decreasing velocity?

• CD
• DE
• EF
• GH

A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?

• 10 m/s

• 1000 m/s

• 100 seconds

• 10 seconds

A ping-pong ball rolls forward 6 meters, and bounces backward 3 meters. What was its displacement (distance from the origin)?

• 9 meters
• 6 meters
• 3 meters
• 0 meters