Test 4/22
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What is Newton’s first law of motion
An object at rest will remain at rest unless acted upon by a nonzero net force or an object in motion stays in motion unless acted upon by an outside force
Inertia meaning
A resistance to change in motion (A more massive object has greater inertia)
Newton’s second law of motion
An objects mass directly affects how much force is needed to accelerate the object
How do you calculate force
Net force/force = Mass x Accel SI unit is N
How to calculate acceleration
Accel = Netforce/force divided by mass SI unit is m/s/s
What is Newton’s third law of motion
An object will exert a force on an object + another object pushes back Action and reaction forces (foot touching a ball is action and the ball touching foot back reaction)
Are action reaction forces balanced
No, because they don’t act on same object