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16 Cards in this Set

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