Term
| Where does the energy stored in the spring come from? |
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Definition
| Energy in the spring comes from the work we did on the bar. We apply our effort force to the bar, move the bar and that stores energy in the spring. |
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Term
| What force makes the mousetrap car move? |
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Definition
The string pulling the axle.
The string does work on the car, transforming the potential energy to kinetic energy. |
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Term
| What force causes the mousetrap car to decelerate (slow)? |
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Definition
| Frictional forces cause car to slow. |
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Term
| The speed of an object changes when an __________ _________ acts on it. |
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Definition
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Term
A ________ ________ acting for a short time can significantly change the motion (speed ) of an object.
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Definition
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Term
A ___________ _________ acting for a long time can significantly change the motion (speed) of an object.
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Definition
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Term
| Energy that has been stored in a spring when it is compressed is ________ _________. |
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Definition
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Term
| When the mousetrap spring decompresses, the potential energys is transformed into into ________ _______. |
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Definition
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Term
| Kinetic energy is defined as ___________. |
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Definition
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Term
| List three reasons the mousetrap car slowed down: |
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Definition
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frictional forces being greater than the kinetic energy (forward motion of the car).
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the energy of motion was transformed into heat.
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the string was no longer doing work on the axle and wheel.
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