Question

boy throws a stone that weighs 50.0 N with a net horizontal force of 100N. What is the magnitude of the horizontal acceleration of the ball.

Answer 1

The mass of the stone: $m = 50 / g=50 / 10 =5 kg$

Magnitude of the horizontal acceleration of the ball: $a = F / m = 100/5=20 meter / sec^2$