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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

20 m

B

10 m

C

60 m

D

80 m

Text Solution

Verified by Experts

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