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.