Forces
Involve one object pushing or pulling on another object
A force can’t
Exist alone
It is always acting between two objects
One objects
Pulsa the other object or one object pushes (repels) the other object
Strength of a force measured in
Newtons (N)
When an object exerts
A force on another object, we speak of a force pair
Effect of forces
A moving object can be stopped or slowed down
Change direction os a moving object
Change shape of an object
Can cause a stationary object to move or accelerate
All objects in the surface of the Earth are attracted to the Earth by a force