Question

A friend throws a baseball horizontally. He releases it at a height of 2.0 m and it lands 21 m from his front foot, which is directly below the point at which he released the baseball. (a) How long was it in the air? (b) How fast did he throw it?

Answer 1

First solve the vertical plane problem.
How long does it take to drop from 2 meters ? It has zero initial velocity down.
-2 = 0 + 0 t +(1/2)(-9.8) t^2

t^2 = 4/9.8
t = .64 seconds in the air

then distance = speed * time
21 = speed * .64

Answer 2

thankyou!!

Answer 3

wait i believe this is not my problem? mine is the cannon problem

Answer 4

Same problem, different numbers