1. Momentum

2. Momentum All objects in motion have momentum. NO MOTION = NO MOMENTUM
Momentum – the product of an objects mass and velocity

3. Formula: Momentum = Mass X Velocity Units for momentum: Kg * m/s
Both Mass and Velocity are directly proportional to Momentum.
The greater the mass, the greater the momentum.
The greater the velocity, the greater the momentum
Which has more momentum:
1. A 100 kg football player running at a speed of 2 m/s or a 60 kg football player running at a speed of 3 m/s?
Calculate:

4. Conservation of Momentum
Law of conservation of momentum explains what happens will objects collide.
Definition: The total momentum of any group of objects remains the same or is conserved unless outside forces act on the objects.
Examples of outside forces: friction.

5. Collision with 2 moving objects – p. 399
Before the crash:
Blue car momentum: ______________________
Green car momentum: _______________________
Total momentum of both cars: ______________
After the crash:
Blue car momentum: _______________________
Green car momentum: _____________________
Total momentum of both cars: ___________________
During the crash, the back car transfers its momentum to the front car and vise versa.
Momentum is conserved.

6. Collision with one moving object
Before the crash:
Blue car momentum: ______________________
Green car momentum: _______________________
Total momentum of both cars: ______________
After the crash:
Blue car momentum: _______________________
Green car momentum: _____________________
Total momentum of both cars: ___________________
During the crash, the back car transfers its momentum to the front car and vise versa.
Momentum is conserved.

7. Two connected objects Before the crash: After the crash:
Blue car momentum: ______________________
Green car momentum: _______________________
Total momentum of both cars: ______________
After the crash:
Blue car momentum: _______________________
Green car momentum: _____________________
Total momentum of both cars: ___________________
During the crash, the cars attach, and momentum is still conserved.