A force is a push, pull or a twist
Pressure is continuous physical force
exerted on or against an object by something in contact with it.
F
= P pa
A
E.G.
100 = 50pa
2
The more surface area something has the
less pressure it exerts, because the force can be spread out more.
If a Tank ran over your foot, it
probably wouldn't break your foot (but it will do some damage, so
don't go get your foot ran over by a tank!)
Although a ballerina could impale your
foot if he/she stood on your foot with her tiptoes!
There are may different forces, but
we'll just cover a few of the crucial ones.
Contact:
Contact:
- Water resistance
- Drag
Non – contact:
- Gravity
- Electro magnetism
- Magnetism
