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A car of mass 1000 kg moves on horizonta...

A car of mass 1000 kg moves on horizontal road with velocity of 30 m/s. When driver applies brake, constant retarding force of 40 kN is applied, retardation of car will b e .....

A

2 `m//s^(2)`

B

`-2 m//s^(2)`

C

4 `m//s^(2)`

D

`-4 m//s^(2)`

Text Solution

Verified by Experts

The correct Answer is:
D

`F= 40 kN = 40 xx 10^(3) N`
Due to retardatin there will be negative sign
`a= -4 m//s`
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