# 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?

May 23, 2018

$1500$ kilograms

#### Explanation:

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

${F}_{\text{net"=425 \ "N}} \cdot 3$

$= 1275 \setminus \text{N}$

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

$F = m a$

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:

$m = \frac{F}{a}$

$= \left(1275 \setminus {\text{N")/(0.85 \ "m/s}}^{2}\right)$

$= 1500 \setminus \text{kg}$