Question

QUESTION 1:

A kangaroo can jump over an object 2.46 m high.

(a)

Calculate its vertical speed (in m/s) when it leaves the ground.

m/s

(b)

How long (in s) is it in the air?

QUESTION 2:

A football quarterback runs 15.0 m straight down the playing field in 3.00 s. He is then hit and pushed 3.00 m straight backward in 1.74 s. He breaks the tackle and runs straight forward another 29.0 m in 5.20 s.

(a)

Calculate his average velocity (in m/s) for each of the three intervals. (Assume the quarterback's initial direction is positive. Indicate the direction with the sign of your answer.)

v₁= m/sv₂= m/sv₃= m/s

(b)

Calculate his average velocity (in m/s) for the entire motion. (Assume the quarterback's initial direction is positive. Indicate the direction with the sign of your answer.)

m/s

Answer 1