Work and Energy

Work is done when a force

Work is done when a force applied on an object causes displacement of the object. Mathematically, Work = Force × Displacement × cos θ, where θ is the

Kinetic energy is the energy possessed

Kinetic energy is the energy possessed by an object due to its motion. It is given by K.E. = ½mv², where m is mass and v is velocity. A moving object

Potential energy is the energy stored

Potential energy is the energy stored in an object due to its position or state. For objects at height h above ground, P.E. = mgh, where g is accelera

Energy can neither be created nor

Energy can neither be created nor destroyed; it can only be converted from one form to another. The total energy in an isolated system remains constan

Power is the rate of doing

Power is the rate of doing work, given by P = W/t, where W is work done and t is time taken. The SI unit of power is watt (W). It measures how quickly