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Use the equation p= m x v , where p=momentum m=mass (kg) and v=velocity (m/s)p= 84x5 = 420 kg m/s

Waves are a way that energy is transferred from one place to another. There are two main types of wave, Transverse and Longitudinal. In both types of wave, energy is transferred in one di...

Work done (joules) = Force (newtons) x distance moved in direction of the force (metres)

Work done = 10 x 2 = 20J

There are three methods of energy transfer that we need to learn: conduction, convection, and radiation.

1. Conduction:

Heat is thermal energy, and in solid...

A freely falling object in air (or any other fluid for that matter) experiences two forces: the gravitational force and the force due to air resistance (or drag force).
While the gravitational fo...