When the displacement along the opposite direction of the force. Then the work is said to be__________.

   What amount of work is done by a centripetal force in a circular motion?

When the displacement along the same direction of the force. Then the work is said to be_____.

    What is S.I. unit of work?

 What is C.G.S. unit of work?

 1 Joule = _________ erg.

The rate of doing work is called ____________.

  What is S.I. unit of power?

What is S.I. unit of power?

  Find the correct relation.

 The unit of power is ________.

  1 giga watt = ______________ watt

   1 H.P = ________ Watt

   Energy is a _____________________ quantity.

  1watt hour = ____________________KJ

The energy of atomic particles measured in____________.

  1 eV = _________ J

One horse power is equal to:

  kWh is the unit of:

A body at a height possesses:

In an electrical cell while in use, the change in energy is from:

A ball of mass m is thrown vertically up with an initial velocity so to reach a height h. The correct statement is:

    A pendulum is oscillating on either side of its rest position. The correct statement is:

A diesel engine supplies 25000 joules of energy in 50 seconds. What will be the power of the engine?

No work is said to be done, when an object moves at an angle of ___ with the direction of the force.

  A girl lifts a doll from the floor and places it on a table. If the weight of the doll is known,  then ___ is required to calculate the work done by the girl on the doll.

  In the SI system, the unit of potential energy is:

When a body is whirled in a circle, then the work done on it by the tension in the string is:

Calculate the decrease in the kinetic energy of a moving body if its value reduces to half of the initial velocity.

  If the speed of a car is halved, how does it kinetic energy change?

A box of weight 150 kgf has the gravitational potential energy stored in it equal to 14700 J. Find the height of the box above the ground. (Take g = 9.8 N/kg)

  Find the gravitational potential energy of 1 kg masskept at a height of 5 m above the ground is g =10 m/s².

Two bodies of equal masses are placed at heights h and 2h. Find the ratio of their gravitational potential energies.

1.    For the same kinetic energy of a body, what should be the change in its velocity if its mass is increased four times?

A truck weighing 5 x 10³ kgf and a cart weighing 5000 kgf are moving with the same speed. Compare their kinetic energies.

How fast should a man weighing 600 N run so that his kinetic energy is 750 J? (g =10 m/s²)

Calculate the kinetic energy of a body of mass 2 kg moving with a speed of 10 m/s.

 A body of mass 5 kg is taken from a height of 5 m to10 m. Find the increase in its potential energy. (g =10 m/s²)

Express5 kWh into joule.

Which of the following is not a constituent of coal gas?