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?

1 Answer
May 23, 2018

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"