Mechanical Energy

What is zero level of potential energy and its importance?

A ball is at rest at the top of a hill when it rolls down the hill and reaches to the bottom of the hill the ball hits a wall and stops. Which sequence of change of energy occurs?

When a ball rolls on an inclined plane, to which of these energies will gravitational potential energy gets converted.

Name the kind of energy used in the following.

Name the kind of energy used in the following.

The mass of a body which has $10 \mathrm{J}$ of kinetic energy while moving at a speed of $2 \mathrm{m} {\mathrm{s}}^{-2}$ is _____ $\mathrm{kg}$.

Which of the following vehicle will be easier to stop? Assume same speed for all vehicles.

A body of $12 \mathrm{kg}$ mass is placed at a certain height from the surface of earth. If its potential energy is $480 \mathrm{J}$, then what will be its height with respect to earth's surface? $(g=10 {\mathrm{ms}}^{-2})$

If velocity of a moving body becomes one-fourth while the mass remains constant, the kinetic energy of the body

Gravitational potential energy is the energy stored when an object is lifted above the surface of the earth.

The total energy of a body is conserved during free fall.

Give one word for the following.
Energy possessed by moving objects. (Kinetic energy/ potential energy)

If the zero level of potential energy is at infinity, the total energy of an orbiting satellite is negative of its kinetic energy.

The velocity acquired by the electron will be

If the velocity of an object is doubled then what will be its kinetic energy?

Calculate the work done in taking object of $1 \mathrm{kg}$ mass at $4 \mathrm{m}$ height? ($\mathrm{g}=10 \mathrm{m}/{\mathrm{s}}^2$)

If an object of mass $\mathrm{m}$ is moving with $\mathrm{v}$ velocity then its kinetic energy will be given as

The momentum of a bullet of mass $20 \text{k}\mathrm{g}$ fired from a gun is $10 \mathrm{k}\mathrm{g} \mathrm{m} {\mathrm{s}}^{-1}$. The kinetic energy of this bullet in joules will be:

A car is accelerated on a levelled road and acquires a velocity $4$ times of its initial velocity. During this process, the kinetic energy of the car:

A  cricket ball is projected vertically upward such that it returns back to thrower.The variaation is K.E. with time is best represented by-