Physics Chapter 9
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11 Terms
Angular Velocity
the angular displacement of an object divided by the time needed to make the displacement
Impulse
the product of the average force on an object and time interval over which it acts
Momentum
the product of the objects mass and the objects velocity
Impulse - Momentum Theorem
the impulse on an object is equal to the change in its momentum
Angular Momentum
the product of a rotating object’s moment of inertia and angular velocity
Angular impulse-angular momentum theorem
the objects angular impulse is equal to the change in the object angular momentum
Momentum
the product of an objects mass and the objects velocity
Closed System
a system that does not gain/lose mass
Isolated System
when the net external force exerted on a closed system is 0
Law of conservation of momentum
states that the momentum of any closed, isolated system does not change
Law of conservation of angular momentum
states that if no net external torque acts on a closed system, then its angular momentum does not change
