Momentum review
Which of the following objects has the greatest momentum?

1kg object at 200m/s    10kg object at 30m/s
20kg object at 20m/s  100kg object at 2m/s

When objects exert forces on one another, how is the total momentum of the system affected?  (Increase, decrease or remain constant).

Give an example of the above.

Give three examples of elastic collisions

Give three examples of perfectly inelastic collisions

Two cars of the same mass collide head-on. Car “A” is gong south at a certain velocity. Car “B” is going north is traveling at twice the velocity of the one going south.
If the collision is an elastic one in which the cars bounce back from one another, what will be the velocity of car “A”?

If the collision in an inelastic one in which the cars “stick” together, in what direction will the cars go?

Two cars traveling at the same speed (V), but in opposite directions collide head-on. Car “A” is going south and has twice the mass of car “B.”
If the collision is an elastic one in which the cars bounce back from one another,, in what direction will car “A” travel after the collision? (south, north, or remain stationary)

If the collision in an inelastic one in which the cars “stick” together, in what direction will the cars go? (north, south, or remain stationary)

You are driving your pickup truck down the road. Do you need to allow more room between you and the car in front of you if you are hauling 6 bunnies (avg mass 1.2 kg) or 6 rhinoceroses (avg mass 1200 kg)?  Explain why in plain English.

Which has the greater mass, a heavy truck at rest or a rolling roller skate?

Which has the greater momentum, a heavy truck at rest or a rolling roller skate?

When the force of impact on an object is extended in time, does the impulse increase or decrease?

Give an example of the above.

When you throw a ball, do you experience impulse?

Describe it.  What does it do to you?

How large is it?

What variables are responsible for its magnitude?

Do you experience impulse when you catch a ball?

Describe it.  What does it do to you?

How large is it?

What variables are responsible for its magnitude?