A car travelling at the speed of 30 km/h...

A car travelling at the speed of 30 km/hr brakes and is brought to halt in 8m.If the same car is travelling at 60 km/hr, then it can be brought to rest with the same breaking power in:

A

5 m

B

15 m

C

24 m

D

32 m

Text Solution

Verified by Experts

The correct Answer is:

d

When speed becomes a times then distance reqd. to stop the body by same retarding force becomes `n^(2)` times.
Here distance becomes `(2)^(2)xx8=32m`.

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