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` and is directly opposed to the motion. The work done by the cycle on the road is

Options

A. `+2000 J`
B. `-200 J`
C. zero
D. `-20000 J`

Answer

C

Explanation

(c ) Here, work is done by the frictional force on the cycle and is equal to `-200xx10=-2000 J`. As the road is not moving, hence, work done by the cycle on the road =zero.