Textbook Vocabulary 9.1 -- Impulse and Momentum
1. Impulse: the product of the average net force on an object and the time interval over which the force acts. Ex: a hockey stick when it hits the puck for a slapshot
2. Momentum: the product of the object's mass and the object's velocity; is measured in kg x m/s. Ex: a car rolling down a hill
3. Impulse-Momentum Theorem: states that the impulse on an object equals the object's final momentum minus the object's initial momentum. Ex: a punch to the face
4. Angular Momentum: the product of a rotating object's moment of inertia and its angular velocity; is measured in kg x m^2/s. Ex: a spinning figure skater
5. Angular Impulse - Angular Momentum Theorem: states that the angular impulse on an object is equal to the change in the object's angular momentum. Ex: a curveball
2. Momentum: the product of the object's mass and the object's velocity; is measured in kg x m/s. Ex: a car rolling down a hill
3. Impulse-Momentum Theorem: states that the impulse on an object equals the object's final momentum minus the object's initial momentum. Ex: a punch to the face
4. Angular Momentum: the product of a rotating object's moment of inertia and its angular velocity; is measured in kg x m^2/s. Ex: a spinning figure skater
5. Angular Impulse - Angular Momentum Theorem: states that the angular impulse on an object is equal to the change in the object's angular momentum. Ex: a curveball
Textbook Vocabulary 9.2 -- Conservation of Momentum
6. Closed System: a system that does not gain or lose mass. Ex: a watch
7. Isolated System: a closed system on which the net external force is zero. Ex: the universe
8. Law of Conservation of Momentum: states that the momentum of any closed, isolated system does not change. Ex: when two balls collide on a pool table
9. Law of Conservation of Angular Momentum: states that if there are no net external torques on an object, then its angular momentum is conserved. Ex: a diver doing flips
7. Isolated System: a closed system on which the net external force is zero. Ex: the universe
8. Law of Conservation of Momentum: states that the momentum of any closed, isolated system does not change. Ex: when two balls collide on a pool table
9. Law of Conservation of Angular Momentum: states that if there are no net external torques on an object, then its angular momentum is conserved. Ex: a diver doing flips