NCERT Solutions for Chapter: Work and Energy, Exercise 1: Multiple Choice Questions

A car is accelerated on a levelled road and attains a velocity four times of its initial velocity. In this process the potential energy of the car

In case of negative work the angle between the force and displacement is

An iron sphere of mass $10 \mathrm{kg}$  has the same diameter as an aluminium sphere whose mass is $3.5 \mathrm{kg}$.  Both spheres are dropped simultaneously from a tower. When they are $10 \mathrm{m}$ above the ground, they have the same

A girl is carrying a school bag of $3 \mathrm{kg}$ mass on her back and moves $200 \mathrm{m}$ on a levelled road. The work done against the gravitational force will be $\left(g=10 \mathrm{m} {\mathrm{s}}^{-2}\right)$

Which one of the following is not the unit of energy?

The work done on an object does not depend upon the

Water stored in a dam possesses

A body is falling from a height $h.$ After it has fallen a height $\frac{h}{2}$, it will possess