Question

A motorist travelling at a speed of 75 kmph, suddenly applies brakes and halts after skidding 50m. determine the time required to stop the car

Answer 1

Then the time required to stop in 3sec

Answer 2

Time required to stop the car is 2.4 seconds.

Explanation:

Given:- Speed of motorist =75kmph

             75*(5/18) =20.83 meterpersecond

            Distance covered after applying brakes=50m

To Find:- Time required to stop the car

Solution:- Time = Distance/Speed

                 Time= 50/20.83 =2.4 seconds

Time required to stop the car is 2.4 seconds.