Energy,Work and Power

1. Formula

1.1. one joule = one newton × one metre 1 J = 1 N m

2. Energy

2.1. :Cannot be destroyed or created,only converted             :Can transfer or convert from 1 body to another    :Total amount remains constant

2.1.1. Kinetic energy :an object is the energy that it possesses due to its motion.

2.1.1.1. SI Unit:K.E

2.1.2. Gravitational potential energy:an object possesses because of its position in a gravitational field. The most common use of gravitational potential energy is for an object near the surface of the Earth where the gravitational acceleration can be assumed to be constant

2.1.2.1. SI Unit:G.P.E

3. Work

3.1. SI Unit:Joules (J)

3.2. The work done by a constant force on an object is the product of the force and the distance moved

4. Power

4.1. SI Unit: Watt(W)

4.2. Energy is defined as the capacity to do work.

4.3. Defined as rate of work done or energy conversion of one joules per second