POWER AND MACHINES

ENERGY, WORK, POWER AND MACHINES.

Energy

This is the ability to do work.

Forms of energy.

Chemical energy: – this is found in foods, oils charcoal firewood etc.
Mechanical energy:- there are two types;
Potential energy – a body possesses potential energy due to its relative position or state
Kinetic energy – energy possessed by a body due to its motion i.e. wind, water

iii. Wave energy – wave energy may be produced by vibrating objects or particles i.e. light, sound or tidal waves.