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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

0.75 s

B

1.33 s

C

6 s

D

35 s

Text Solution

Verified by Experts

The correct Answer is:
C
Acceleration `a = (-F)/(m) = (-50)/(20) = - 2.5 ms^(-2)`
` u= 15 ms^(-1) , v= 0 , t = ? `
` t = (15)/(2.5) = 6s`
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