Question

A car of mass 1000kg is moving at 10m/s when it hits a wall. The force of the car on the wall is 400 N. Calculate the stopping time

Answer 1

25s

Step-by-step explanation:

Given parameters:

Mass = 1000kg

Velocity = 10m/s

Force = 400N

Unknown:

Stopping time = ?

Solution:

To find the stopping time, we use Newton's second law of motion:

Ft = mv

F is the force

t is the stopping time

m is the mass

v is the velocity

400 x t = 1000 x 10

t = 25s