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A car moving with a speed of 40 km//h ca...

A car moving with a speed of `40 km//h` can be stopped by applying the brakes after at least 2 m. If the same car is moving with a speed of `80 km//h`, what is the minimum stopping distance?

A

8m

B

2m

C

4m

D

6m

Text Solution

Verified by Experts

The correct Answer is:
A
Stopping distance `prop u^2`
`S_1/S_2 = (u_1^2)/(u_2^2) rArr (2)/(S_2) = ((40)^2)/(80)^2) = 16/64 rArr S_2 = 8m`
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