Question

a car of mass 200kg is moving with a speed of 5m/s. Calculate the work done by the frictional force to stop the car

Answer 1

As time is not mentioned here. I'm just telling the steps to solve this.

First calculate the deceleration using formula

a= v-u/t

Then substitute the value of deceleration in the equation

F=m×a

Hope this helps

Answer 2

m=200kg
u=5m/s
v=0(Car is stopping)
As time is not there,

F=m x a
=>F=m x (v-u) /t
=>F= [200 × (-5)/t] N.


Hope this will help you.

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