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A body of mass 2kg moving on a horizonta...

A body of mass `2kg` moving on a horizontal surface with an initial velocity of `4 ms^(-1)` comes to rest after `2` second. If one wants to keep this body moving on the same surface with a velocity of `4 ms^(-1)` the force required is

A

zero

B

2 N

C

4 N

D

8 N

Text Solution

Verified by Experts

The correct Answer is:
C
`0=4-axx2rArra=2m//s^(2)`
`F=ma=2xx2=4N`
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