Define average power.

A lamp consumes 1000 J of electrical energy in 10 s. What is its power?

Define 1 watt of power.

What is power?

The kinetic energy of an object of mass, m moving with a velocity of 5 ms–1 is 25 J. What will be its kinetic energy when its velocity is doubled? What will be its kinetic energy when its velocity is increased three times?

Write an expression for the kinetic energy of an object.