Q52 of 54 Page 135

A force is applied on a body moving with speed of 2 m/s and its mass is 40 kg after appling the force its velocity increases to 5 m/s. Calculate the work done by the force.

Mass of body (m) = 40 Kg


Initial speed (u) = 2 m/s


Final speed (v) = 5 m/s


The work done by the body is equal to the change in kinetic energy.




W = 420 J


Hence, the work done by the body is 420 J.


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