What were newtons theories?

Answer 1

1st law: When a body is at rest or uniform motion it will remain at rest or in uniform motion unless acted upon by an external unbalance force.

(a ball at on a stand will not move until you hit it with a bat)

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2nd law: The acceleration of a body is directly proportional to the unbalanced external force and inversely proportional to its mass.

(A ball will move faster if you hit it harder and slower if it is heavier)

3rd law: For every action their is an equal and opposite reaction.

(This one is a little harder, If you hit a ball with a bat, the ball is acted upon by a force applied to it by the bat, at the same time the bat is acted upon by a force in the opposite direction but of the same size which is applied by the ball)