1Force
Anything that
causes the velocity of an
object to change
2Mass (*?)
A measure of how difficult it is to accelerate a body. (*?)
3The Newton
A force of 1 Newton gives a mass of 1 kg an acceleration of 1 m s⁻²
4Weight
The weight of an object is the force of the Earth’s gravity acting on it.
5Newton's First Law of Motion
A body will remain at rest or travelling
with constant velocity unless an unbalanced force acts on it.
6Newton's Second Law of Motion
When an unbalanced force acts on a body the rate of change of momentum is directly proportional to the force and takes place in the direction of the force.
7Newton's Third Law of Motion
For every action there is an equal and opposite reaction
**check papers**
states that if a body A exerts a force on a body B, then body B
exerts an equal but opposite force on body A, i.e. action and reaction are equal and opposite.
8The Principle of Conservation of Momentum
In any interaction between two or more bodies the total momentum before is equal to the total momentum after provided no external forces act on the system of bodies.