Ncert Exercises & Solutions

A bicyclist comes to a skidding stop in \(10\) m. During this process, the force on the bicycle due to the road is \(200\) N is directly opposed to the motion. The work done by the cycle on the road is:

1.	\(+2000\) J	2.	\(-200\) J
3.	zero	4.	\(-20000\) J

Step 1: Find the work done by the friction.

Here, work is done by the frictional force on the cycle and is equal to - 200 x 10 = -2000 J.
As the road is not moving, hence, work done by the cycle on-road zero.

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