Question

A car of mass 500kg starts from rest and gains a speed of 80ms in 5 s .calculate the force applied on the car

Answer 1

800 N

Step-by-step explanation:

F = ma

We are given the car's mass/ m = 500kg

Acceleration can be calculated from the fact that the car goes from rest to a speed of 80 m/s in 5 seconds:

Acceleration = (80 m/s)/(5 sec)

Acceleration = 16 m/s^2

Force = (500 kg)*(16 m/s^2) = 8000 kg*m/s^2

1 Newton (N) = 1 kg*m/s^2

Force = 8000N