Term
| Every time one object exerts a force on another object, the second object exerts a force that is equal in size and opposite in direction back on the first object. |
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Definition
| Describe Newton's 3rd Law of Motion. |
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Term
ACTION FORCE- nautilus pushing water out of its body
REACTION FORCE- the ocean water behind the nautilus pushes back |
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Definition
| What are the action and reaction forces that propel the nautilus through the ocean? |
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Term
False
When you push down on a table, the table resists the push with the same amount of force |
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Definition
T or F
Action and reaction forces always result in motion. |
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Term
ACTION FORCE- engines pushing exhaust downward
REACTION FORCE- the exhaust pushing back up on the rockets |
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Definition
| What are the action/reaction forces that make a space shuttle launch possible? |
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Term
BALANCED FORCES only act on one object.
ACTION/REACTION FORCES act on different objects. |
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Definition
| What is the major difference between balanced forces and action/reaction forces? |
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Term
1st- Kangaroo jumps from a still position, and gravity brings it back to the ground.
2nd- If 2 kangaroos use the same force to jump, the less massive kangaroo will have more acceleration.
3rd- Kangaroo applies an action force to the ground. The ground provides a reaction force that propels the kangaroo forward. |
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Definition
| Explain how all 3 of Newton's Laws are at work as a kangaroo jumps. |
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Term
| You must be able to predict where Mars will be when the spacecraft reaches it. You must also be able to control the force on your spacecraft to arrive in the right place at the right time. |
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Definition
| If you are sending a spacecraft to Mars, you need to consider Newton's Laws to make some predictions. Explain. |
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Term
1st- Overcome resting inertia to get canoe moving by applying an unbalanced force.
2nd- Choose a less massive canoe for more acceleration.
3rd- If you want to move straight ahead, you must push the paddle backwards. |
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Definition
| How can knowledge of Newton's Laws help you to win a canoe race? |
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Term
| The air coming out of the balloon is the action force. The air outside of the balloon pushes back on the released air, causing the balloon to fly erratically through the air. |
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Definition
| Explain Newton's 3rd Law in terms of a blown up balloon being released. |
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Term
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Definition
Finish the following sentence:
Forces act in ____________________. |
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