Question

3 women push a stalled car. Each woman pushes with a `425` `N` force. What is the mass of the car if the car accelerates at `0.85` `m``/``s^2`?

Answer 1

`1500` kilograms

Explanation:

Assuming that the women push the car in the same direction, then the total force is:

`F_"net"=425 \ "N"*3`

`=1275 \ "N"`

To find the mass, we use Newton's second law of motion, which states that,

`F=ma`

where:

• `F` is the force applied in newtons

• `m` is the mass of the object in kilograms

• `a` is the acceleration of the object in meters per second squared

So, we get:

`m=F/a`

`=(1275 \ "N")/(0.85 \ "m/s"^2)`

`=1500 \ "kg"`