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23 Cards in this Set
- Front
- Back
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Acceleration of an object is in the same direction as the net force on the object
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Newtons 2nd Law
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force that opposes the sliding motion between 2 touching surfaces
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friction
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What does friction depend on
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surface type and force
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what causes friction
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microwells
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frictional force between non-moving objects that prevents 2 surfaces from sliding past each other
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static friction
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frictional force that opposes the motion of 2 surfaces sliding past each other
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sliding friction
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how is sliding friction caused
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by microwells forming and breaking
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frictional force between a rolling object and the surface it rolls on
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rolling friction
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a friction like force that opposes the motion of objects that move through the air
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air resistance
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without air resistance
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all objects would fall at the same acceleration
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what does air resistance depend on
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size and shape
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the downward force of gravity = the upward force of drag
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terminal velocity
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the highest speed an object will reach and when net force is 0
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terminal velocity
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an active force b/w any 2 obj
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gravity
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what does gravity depend on
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mass and distance
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f= G x m1 m2
d2 |
law of universal gravitation
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earths gravitational acc
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9.8 m/s2
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gravitational force exerted on an obj
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weight
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dif b/w mass and weight
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mass- measure of matter
weight- force |
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to every action force there is an equal and opposite reaction force
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3rd law
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unbalanced, not cancel out b/c act on dif objects
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action-reaction forces
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product of an objects mass and velocity
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momentum
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does momentum change
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if mass or velocity does
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