•First Law
(Inertia)
–A body at rest remains at rest, and a body in motion
continues to move in a
straight line with a constant speed unless and until an external unbalanced force acts upon it. That is, an
object with no net force
acting upon it has a constant velocity.
•Second
Law (acceleration)
–The rate of change of momentum of a body is directly proportional to the impressed force and takes place in
the direction in which the
force acts. Nonrelativistically, the force acting on an object is its acceleration times its mass. F=ma.
•Third Law
(Action and Reaction)
–Whenever A exerts a force on B, B is simultaneously exerting a force of the same magnitude on A, in the
opposite direction.
•