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First we want to state what Newton's first law is. 

Newton's first law of motion states that an object at rest will remain at rest, or if in motion, will remain in motion at a constant ve...

Initially the momentum is zero.

Due to conservation of momentum, the alpha particle and radium nucleus must gain equal but opposite momentum.

The mass of the radium nucleus ...

Terminal velocity is the constant speed (in a particular direction) a body reaches when the forces are balanced, i.e. acceleration = 0 m s^-2.

An example of...

In fossil fuels powered power stations fossil fuels (such as coal) are burnt to generate heat. This heats is used to heat a large amount of water and turn it into steam. The movement of the steam cause...

In order to answer this question it is important to remember that an atom has energy in two forms: kinetic (energy that allows the atom to move) and potential (energy that is stored in the bonds betwee...