The laws of conservation of energy and momentum provide a way to predict and describe the movement of objects.
Conservation of Energy and Momentum
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Kinetic energy can be calculated by using the formula E = (1/2)mv².
Changes in gravitational potential energy near Earth can be calculated by using the formula (change in potential energy) = mgh.
Momentum is calculated as the product mv.
Momentum is a separately conserved quantity different from energy.
An unbalanced force on an object produces a change in its momentum.