Question

A boy pushes a box with a net force of 20 N, if the box has a mass of 10 kg, what is the acceleration of the box? (Numeric answer only, no units)

Answer 1

Given:

$\begin{gathered} F=\text{ 20N} \\ m=10\operatorname{kg} \\ a=\text{?} \end{gathered}$

We have from Newton's second law of motion:

$F=ma$

Substitute the values,

$\begin{gathered} 20=10\times a \\ a=\frac{20}{10} \\ a=2\text{ } \end{gathered}$

Hence the acceleration of the box is 2 m/s^2, that is

$=2ms^{-2}$