Physics Definitions

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Define acceleration

vector determined by the rate of change of velocity

Define the Newton

force that causes 1kg to have an acceleration of 1ms^2

Define Weight

the gravitational force on a body

Define Newton's 1st law

A body will continue in its state of rest or uniform motion in a straight line unless acted upon by an external resultant force.

Define Newton's 2nd law

The rate of change of momentum of a body is directly proportional to the applied RF and takes place in the direction in which the RF acts.

Define Newton

If body A exerts a force on body B, then body B will exert a force on body A that's equal, opposite, collinear and of the same type.

Define centre of gravity

point where the entire weight of an object appears to act

Define work done by a force

energy/work of a force used in moving through a displacement in the direction of the applied force.

Define the joule

work done when a force of 1N moves 1m in the direction of the applied force

Define energy (J)

stored ability to do work

Define the principle of the conservation of energy

In a closed system energy may be converted from one form to another but cannot be created or destroyed.