Question

An object is thrown with an initial velocity of 3 m/s. What is its acceleration at its maximum height?


zero

3 m/s2

9.8 m/s2

none of the above
8.
A stone is dropped from the top of a tower of height 44.1m. How long will it take to reach the ground?


9 seconds

4 seconds

3 seconds

2 seconds
9.
A student standing on the ground next to a tall building throws a ball straight up with a speed of 39.2 m/s. If it takes the ball 4 seconds to reach the same height as the top of the building, how tall is the building?


44.1 m

78.4 m

161.7 m