Question

A ball is thrown vertically upward with an initial velocity of 3 m/s from the window of a tall building. The ball strikes the ground 4 seconds later. Determine the velocity at which the ball strikes the groun

Answer 1

$$v_y=v_0+gt$$

$$v_y=-3+(9.8)(4)=36\frac{m}{s}$$

Direction: downwards.