Section+5+chap+3

=__//**Section 5- Momentum: Concentrating on Collisions**//__=

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What Do You see?
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little kid in a cart drove straight into a huge monster truck.

What Do You Think?
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size, speed, strength of the frame sports automobile because its much smaller

Investigate
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2a. moving car stops and the target car accelerates forward 3a. the car took longer to stop and hit the target car harder and made it move faster b. same thing just faster and harder c. rear ending a car at a stop sign or pool balls 5a. same thing except light weight car goes quicker and moving heavy car takes longer to stop. b. bus hitting a porsche c. speeds up more and heavy car takes longer to stop 6a. light car stops quick and the heavy one goes slow. b. porsche hitting a bus c. light weight takes longer to stop and heavy car goes quicker 7a. we could tell by which one changes it less because that is the heaviest.

Physics Talk
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p=mv
 * momentum:** the product of the mass and the velocity of an object; momentum is a vector quantity

Checking Up
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1. eagle 2. momentum is transferred when one thing collides with another 3. If a car hit a skateboarder would get injured because the mass of the car is a lot more than the person

Physics To Go
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1. the car moving would stop and the other car would go. The momentum is transferred. 2. they have the same momentum so they will bounce off one another meaning their velocity changes direction 3. the smaller car will bounce back twice the speed and the large car will move back half the speed 4. they have more momentum causing the players on the opposite team to fly backwards 5. The momentum of the car determines which gets knocked backwards 6. 1 m/s