harold threw a ball 3 meters. harold is 2 meters tall. how fast did he throw the ball, and long was it in the air

Answer 1

Assume that harold three ball horizontally.

Time of flight, t = time to fall through height of 2m with starting vertical velocity of 0.

h = 0t + 1/2gt² => t=√(2h/g) = 0.639 s

In the horizontal direction, the ball covers 3 m in 0.639 s at constant speed.

Speed of throw = 3m/0.639 s = 4.69 m/s