Question

a heavy ball with a mass of 3.5 kg is observed to accelerate at a rate of 6.0 m/s ^2. What is the size of the net force acting on this ball?

Answer 1

A heavy ball with a mass of $3.5\,\mathrm{kg}$ is observed to accelerate at a rate of 6.0\,\mathrm{m/s\,^2}. What is the size of the net force acting on this ball?

Solution

According to the Second Newton’s law

$$F = m a,$$

where $F$ – the net force acting on this ball, $m$ – mass of the heavy ball, $a$ – an acceleration of the ball.

$$F = 3.5 * 6.0 = 21\,N.$$

Answer: 21N.