Q43 of 146 Page 145

A car is being driven by a force of 2.5 × 1010 N. Travelling at a constant speed of 5 m/s, it takes 2 minutes to reach a certain place. Calculate the work done.

Given, Force = 2.5 × 101N

Speed of the car (u) = 5m/s


Time taken (t) = 2 × 60s = 120s


Distance = Speed x time


= 5 x 120


Work done = Force × distance


= 2.5 × 1010 × 600


Hence, Work done = 1.5 × 1013J.


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