Kinetic energy
Kinetic energy is the energy an object possesses due to its motion.
Kinetic energy is a scalar quantity, meaning it has magnitude but no direction.
A car of mass 1000 kg is moving at a speed of $20 \, \text{m s}^{-1}$. What is its kinetic energy?
Solution
Potential energy
Potential energy is the energy stored in an object due to its position or configuration.
There are two main types of potential energy:
Gravitational potential energy
Gravitational potential energy is the energy stored due to the position of an object in a gravitational field.
The formula for gravitational potential energy is:
$$E_p = mgh$$
where:
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