Free-Fall Motion

What happens to the total distance  that a ball travels as it falls off the side of a cliff?

• The distance remains constant 
• The distance increases at a uniform rate
• The distance increases at a nonuniform rate 
• The distance decreases at a uniform rate

What happens to the velocity of a ball as it is dropped off a cliff? 

• It decreases at a uniform rate 
• It increases at a uniform rate 
• It is constant 
• It increases at a non-uniform rate

In a normal environment, why does a bowling ball and feather hit the ground at different times when dropped from the same height?

• They don't; they hit the ground at the same time.
• One is more dense than the other.
• One is heavier than the other.
• Air resistance 

A ball is thrown in the air with an initial velocity of 40 m/s. How long does it take to reach back to the point it was thrown from?

• 4 seconds 
• 2 seconds 
• 6 seconds 
• 8 seconds 

A ball is thrown up in the air with an initial velocity of 40 m/s. What is the ball's velocity after 2 seconds? 

• 0 m/s 
• 20 m/s traveling upward
• 20 m/s traveling downward
• 40 m/s traveling downward

A ball is thrown up in the air with an initial velocity of 40 m/s. What is the ball's velocity after 6 seconds? 

• 20 m/s traveling upward.
• 10 m/s traveling downward.
• 20 m/s traveling downward. 
• 30 m/s traveling downward. 

A skydiver jumps out of a plane and is falling towards the Earth before she opens her parachute.

• She is in free fall because nothing is holding her up.

• She is in free fall because gravity is pulling her down.

• She is not in free fall because skydiving is an expensive hobby.

• She is not in free fall because gravity is not the only force she is experiencing.

Using g = -10 m/s²:

A ball is tossed up from the ground at a speed of 40 m/s. How many seconds does it take to get to the top of its arc?

• 2

• 4

• 6

• 8

Using g = -10 m/s²:

A ball is tossed up from the ground at a speed of 40 m/s. What is its velocity at the top of its arc?

• 20 m/s

• 10 m/s

• 0 m/s

• -20 m/s

• -40 m/s

Using g = -10 m/s²:

A ball is tossed up from the ground at a speed of 40 m/s. What is its velocity when it hits the ground?

• 20 m/s

• 10 m/s

• 0 m/s

• -20 m/s

• -40 m/s