Physics
Force
A force is a push or a pull
A force can cause an object
speed up
slow down
change direction
change shape
Force is measured in
newtons (N)
Force is measured with
newtonmeter or a spring balance
Gravitational
This is the attractive force exerted between bodies because of their masses
-This force increases if either or both of the masses if increased and decreased if they are moved further apart
Weight
is the gravitational force of the Earth on an object
2.Electric/ Electrostatic
Attractive and repulsive forces due to bodies being charged
3.Magnetic
Attraction/ repulsion between magnets but also the force that allows electric motors to work
4.Tension
A stretching force
5.Compression
A squashing force
6.Lift
An upwards force generated by the wing of an aircraft when there is a difference in pressure above the below wing
7. Thrust
A force that pushes an object forwards, usually produced by an engine
8.(a) Friction
This is the forces that opposes motion because of the surface rubbing against each other
The kinetic energy of the moving object is converted to heat energy by the force of friction
9.