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Class Notes: Newton’s Third Law - action and reaction
Newton’s Third Law
When one object exterts a force on a second object, the second object exerts and equal force on the first object in the opposite direction.
for every action there is an equal but opposite reaction.
action - the initial force
reaction - the equal but opposite push back
act on different objects (sketch)
because action and reaction act on different objects - they sometimes behave very differently.
Examples:
ball bounce
standing on floor
action and reaction make a force pair.
Forces always occur in pairs.
normal force is a reaction force to pushing against a surface