Science Chapter 11
Newton's 2 Law of Motion
An objects acceleration (a) equals the net force on the object (b) divided by its mass
(c) if the force increases,then the acceleration decrees. Newton's first law shows that
a net force is needed in order for an object to accelerate.
Newton's third law :For every action force, there is an equal and opposite reaction force.
Newton's law of universal gravitation:The planets, the stars, and all the partials of matter exert gravitational force.
Weightlessness And Momentum
Momentum: The combination of the mass and the speed of an object.