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16 Cards in this Set
- Front
- Back
FORCE
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An action exerted on a body in order to change the body's state of rest or motion; force has magnitude and direction.
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NET FORCE
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The sum of all forces acting on an object.
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NEWTON'S 1ST LAW
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An object at rest remains at rest and an object in motion maintains its velocity unless acted upon by an unbalanced outside force.
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NEWTON'S 2ND LAW
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The unbalanced force acting on an object equals the object's mass times it's acceleration.
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NEWTON'S 2ND LAW EQUATION
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F = ma
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UNIVERSAL GRAVITATIONAL EQUATION
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All objects in the universe attract each other through gravity.
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FREE FALL
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A body's motion when only the force of gravity is acting on the body.
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FREE FALL ACCELERATION
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g = 9.8 m/s2 (near Earth's surface)
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WEIGHT
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Weight is equal to mass time free fall acceleration;
w = mg |
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TERMINAL VELOCITY
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The constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity.
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PROJECTILE MOTION
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The motion of objects that are moving in two dimensions under the influence of gravity.
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ORBIT
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A body in free fall following a circular or nearly circular path around another object.
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NEWTON'S 3RD LAW
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For every action force, there is an equal and opposite reaction force.
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MOMENTUM
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A quantity defined as the product of an object's velocity and mass.
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MOMENTUM EQUATION
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p = mv
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CONSERVATION OF MOMENTUM
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The total amount of momentum in an isolated system is conserved.
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