Free Fall

A baseball is thrown up into the air. What happens to the velocity as the ball rises in the air?

• the velocity increases

• the velocity decreases

• the velocity remains constant

A textbook is dropped from a second floor window and falls to the ground. What happens to the velocity as the book falls to the ground?

• the velocity increases

• the velocity decreases

• the velocity remains constant

A baseball is thrown up into the air. What happens to the acceleration as the ball rises in the air?

• the acceleration increases

• the acceleration decreases

• the acceleration remains constant

A baseball is thrown up into the air. What direction is the acceleration of the ball?

• upward

• downward

A ball is thrown upward with an initial speed of 30m/s. At what location will the ball be moving upward with a speed of 20m/s

• A

• B

• E

• F

A ball is thrown vertically upward with a speed of 25 𝑚/𝑠. How long does it take the ball to reach its highest point?

• 2.5 s

• 3.5 s

• 25 s

• 35s

A 3.0 kg mass is thrown vertically upward with an initial speed of 10 m/s. What is the maximum height this object will reach?

• 0.3 m

• 3.3 m

• 5 m

• 30 m

Saeed throws a stone downward with a speed of 3.0 𝑚/𝑠 from a balcony. How high is the balcony from the ground if it takes the stone 1.0 𝑠 to reach the ground?

• 8 m

• 5 m

• 3 m

• 2 m

Which graph might show the velocity of a ball that is thrown straight up into the air and allowed to fall freely to the ground?

• Graph 1

• Graph 3

• Graph 3

• Graph 4

A ball is thrown upward. Its acceleration at the highest point is ___________.

• positive

• negative

• zero

• positive and then negative