# physics lap 2 test

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force

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19 Terms
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force

a push or a pull exerted by some agent on some object

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vectors

directions ( can combine to make larger or smaller overall effects)

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4 natural forces

gravity, weak nuclear force, electromagnetic force, strong nuclear force

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Normal force

supports the weight of am object

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tension

points along rope to center as a result of being stretches

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friction

force that opposes motion

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Net force

sum of all forces acting upon an object

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Newtons first law

an object in motion stays in motion, an object at rest stays at rest, unless acted upon by an outside non-zero force

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inertia

the tendency of an object to resist a change in motion unless an outside force acts on the object

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an object accelerating means

Fnet≠0→forces not balanced

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constant velocity or @ rest

Fnet=0→forces are balanced→equilibrium

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free body diagrams

drawing forces on a picture

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How does mass influence acceleration?

acceleration inversely is proportional to mass

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increases mass→

acceleration decreases

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decreases mass→

acceleration increases

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More mass→less acceleration→

harder to move

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less mass→more acceleration→

easier to move

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How is mass related to inertia?

mass is a measure of inertia

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Newtons third law

for every action, there is an equal to opposite reaction

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