Q20 of 28 Page 159

A cycle together with its rider weighs 100kg. How much work is needed to set it moving at 3 m/s.

The energy required is kinetic energy of the cycle together with its rider

Given data :


mass (m) = 100kg


velocity (v) = 3 m/s


Kinetic Energy is given by the formula Putting the given values in the formula ,we have


100 = 450 J


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