Q22 of 35 Page 143

A force of 4N acts on a body of mass 2 kg for 4 seconds. Assuming the body to be initially at rest find its velocity when the force stops acting.


Acceleration=


=


= 2m/s2


According to the first equation of motion


v = u + at


= 0m/s + 2m/s2 (4s)


= 8m/s


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