Question

1) A rock is tossed straight up with a speed of 15 m/s. When it returns, it falls into a hole 12m deep. how long is the rock in the air, from the instant it is released until it hits the bottom of the hole?

2) A ball is thrown horizontally from the roof of a building. the ball takes 3 s to hit the ground below and travels 25 m horizontally. How high is the building?

Answer 1