-When one object exerts a force on a second object exerts an equal but opposte force on the force.
.forces are equal and oppposite but act on different objects.
.they are not "balenced forces"
ex).the movement of the horse depends on the forces acting on the force
ACTION-REACTION PAIRS
-The rocket exerts a downward force on the exhaust gases.
-The gases exert an equal but opposite upward force on the rocket.
-both objects accelerate
-The amount of acceleration depends on the mass of the object
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