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An object falling freely from the roof of a multistorey building has ________ and _________ energy when halfway down the building.
Define the term kinetic energy. Give one example of a body which possesses kinetic energy.
Name three non-renewable sources of energy.
Name two examples in which the mechanical energy of a system remains constant.
Name the energy changes for each of the following cases:
dynamo
Calculate the decrease in the kinetic energy of a moving body if its velocity reduces to half of the initial velocity.
State the energy changes which take place when:
A body thrown vertically upwards from the ground.
State the energy transformation on the following:
Electricity obtained from hydro energy.
Give one example when:
Light energy changes to chemical energy.
Obtain an expression for the kinetic energy of a body of mass m moving with a velocity v?
