1. Chapter 6 Objectives Compare the momentum of different moving objects.
Section 1 Momentum and Impulse
Chapter 6
Objectives
Compare the momentum of different moving objects.
Compare the momentum of the same object moving with different velocities.
Identify examples of change in the momentum of an object.
Describe changes in momentum in terms of force and time.

2. momentum = mass  velocity
Section 1 Momentum and Impulse
Chapter 6
Linear Momentum
Momentum is defined as mass times velocity.
Momentum is represented by the symbol p, and is a vector quantity.
p = mv
momentum = mass  velocity

3. Section 1 Momentum and Impulse
Chapter 6
Momentum

4. Section 1 Momentum and Impulse
Chapter 6

5. Linear Momentum, continued
Section 1 Momentum and Impulse
Chapter 6
Linear Momentum, continued
Impulse
The product of the force and the time over which the force acts on an object is called impulse.
The impulse-momentum theorem states that when a net force is applied to an object over a certain time interval, the force will cause a change in the object’s momentum.
F∆t = ∆p = mvf – mvi
force  time interval = change in momentum

6. Section 1 Momentum and Impulse
Chapter 6
Impulse

7. Linear Momentum, continued
Section 1 Momentum and Impulse
Chapter 6
Linear Momentum, continued
Stopping times and distances depend on the impulse-momentum theorem.
Force is reduced when the time interval of an impact is increased.

8. Impulse-Momentum Theorem
Section 1 Momentum and Impulse
Chapter 6
Impulse-Momentum Theorem

9. Impulse-Momentum Theorem
Section 1 Momentum and Impulse
Chapter 6
Impulse-Momentum Theorem