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Impulse
Product of average force and the time interval during which the force acts
A vector quantity
Has the same direction as the average force
Average Force
Impulse is a vector quantity
Has the same direction as the ____ _____
Formula of Impulse
Newton x Seconds (N X S)
SI Unit of Impulse
Linear Momentum
Quantity of motion of an object.
Product of the object’s mass times its velocity.
A vector quantity
Has the same direction as the velocity
Velocity
Linear Momentum is a vector quantity.
Has the same direction as the ____
Formula of Linear Momentum
Impulse-Momentum Theorem
When a net force acts on an object, the impulse of this force is equal to the change in the momentum of the object.
Formula of Impulse-Momentum Theorem
Expanded Formula of Impulse-Momentum Theorem
Small
The average momentum for a longer elapsed time has a smaller/bigger impact force.
Inverse Relationship
Relationship between average momentum and elapsed time.
Velocity
The variable that needed to be changed to change the momentum.
Progress
What is the meaning of the p in the momentum formula which states:
p = mv
Principle of Linear Momentum
Total linear momentum of an isolated system is constant or conserved.
Isolated System
One for which the sum of the average external forces acting on the system is 0
Isolated System
Occurs when two objects wanted to be at the same place and time.
Collisions in One Dimension
When two objects collide (assume in an isolated system), total linear momentum is conserved.
Formula for Principle of Linear Momentum
Elastic
Inelastic
2 types of Collisions in one dimension
Elastic Collision
Total KE of the system after collision is equal to the total kinetic energy before the collision
KE is conserved
Conserved
In Elastic Collision, KE is _____?
Inelastic Collision
KE is not conserved
Objects stick together after colliding
Completely/Perfectly Inelastic Collision
Also known as Inelastic Collision
The energy is transformed into a new form of energy.
Internal Forces
Forces that objects within the system exert on each other.
External Forces
Forces exerted on objects by agents external to the system.
