-Potential energy is exist whenever which has mass, has position within a force field. The potential energy of an object is given by a relation:
PE=mgh
where,
-PE=energy(in joules)
-m= mass(in kilograms)
-g=gravitational acceleration on the Earth(9.8m/s)
-h=height above earth's surface(in meters)
Kinetic Energy:
-Kinetic energy exist whenever an object in which has mass is in motion with some velocity. Kinetic energy of an object is given by a relation:
KE=1/2mv2
where,
-ke=energy(in joules)
-m=mass(in kilograms)
-v=velocity(in meters/s)
Conservation of energy:
-Energy can be change from one form to another, but cannot be created or destroyed.
-As the object falls and accelerates due to the earth's gravity, gravitational potential energy is converted to kinetic energy. When the object strikes the ground,all of the energy has to be in form of kinetic energy and the object is moving at its maximum velocity.
post end,
syazana(14)
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