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.

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

Section 1 Momentum and Impulse Chapter 6 Momentum

Section 1 Momentum and Impulse Chapter 6

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

Section 1 Momentum and Impulse Chapter 6 Impulse

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.

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

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