When Adam tries to throw a basketball, there is an action force when the ball comes down.
Newton's First Law states if a box is at rest, it wants to stay at rest.
Sam, where are you going?
Amy, I do not know, but I think I will keep moving forever.
Part two
No, you are too heavy!
Newton's Second Law states how fast the rock can move depends on how much the rock weights and how strong that John will kick the rock.
Hey John, can you try to kick me?
Newton's Third Law states that every action there is an equal and opposite reaction.
Newton's First Law also tells if a box is moving, it will keep moving.
The big rock will move very slow because it is too heavy when John uses all his force to kick the rock.
When the basketball comes down and hits the ground, it causes a downward action force and the ground pushes up the ball on the same force which is the reaction.
Action
Reaction
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