Home
Class 11
PHYSICS
According to work energy theorem or work...

According to work energy theorem or work energy principle, work done by net force in displacing a body is always equal to change in K.E. of the body. Similarly , if some work is drawn from the body, K.E. of the body decreases by the same amount. In either process, we assume that potential energy of the body does not change.
Read the above passage and answer the following question:
(i) A car weighing 500 kg is running at a speed of `72 km//h`. In how much distance will it stope by applying a braking force of 4000N?
(ii) What are the implication of this theorem in day to day life ?

Promotional Banner

Similar Questions

Explore conceptually related problems

Work done by a force in displacing a body is an example of

According to work energy principle, work done by …………………..in displacing body …………………to…………………… in………………. .

Work done on a body is equal to change in its………….

According to the work- energy theorem, work done by a force on a body is equal to change in its kinetic energy. Prove the theorem.

According to the work energy theorem, the work done by the net force on a particle is equal to the change in its

According to the work energy theorem, the work done by the net force on a particle is equal to the change in its

Show that the work done by an external constant force on a body is equal to the change in kinetic energy of the body.