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A constant retarding force of 50 N is ap...

A constant retarding force of 50 N is applied to a body of mass 20 kg moving initially with a speed of 15 `ms^(-1)` . How long does the body take to stop ?

A

6s

B

8s

C

9s

D

10s

Text Solution

Verified by Experts

The correct Answer is:
A
(a) Give, F=50N, m=20 kg, v=`15 ms^(-1)`
Impule `F=(mv)/( Deltat)`
Time `Deltat=(mv)/(F)`
`Deltat=(20xx15)/(50)=6s`
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