Question

A person is pushing a box. The net external force on the 60-kg box is stated to be 90 N. If the force of friction opposing the motion is 30 N, what is the acceleration of the box?a. 0.66 m/s2b. 1.5 m/s2c. 2.0 m/s2

Answer 1

`b.1.5m/s^2`

Step-by-step explanation:

We are given that

Mass of box=60kg

Net external force applied on the box=90 N

Friction force =30N

We have to find the acceleration of the box.

We know that

Net external force=ma

Substitute the values then we get

`90=60a`

`a=(90)/(60)=1.5m/s^2`

Hence, option b is true.