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An automobile travelling with a speed 6...

An automobile travelling with a speed `60 km//h` , can brake to stop within a distance of `20 m` . If the car is going twice as fast i. e. , `120 km//h`, the stopping distance will be

A

20m

B

40m

C

60m

D

80 m

Text Solution

Verified by Experts

The correct Answer is:
D
`v^(2)-u^(2)=2 as` , as,`v=0`
`-u^(2)prop s, ((u_(1))/(u_(2)))^(2)=(S_(1))/(S_(2))`
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