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the energy of position (top of the slide, highest point of the swing) |
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energy of motion or movement (the swing moving downward) |
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kinetic energy becomes potential energy as the swing goes back up. Potential energy becomes kinetic energy as the swing goes back down. Explain the slide... |
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the result of a force moving an object...when pushes and pulls move an object, work is done. If the obeject does not move when pushed or pulled, then no work is done |
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a machine made of one or two parts (tools like a hammer or screwdriver) |
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ramp(inclined plane), wheelbarrow (wheel and axel-wheel attached to a rod), nail (wedge-it has slanted sides), screwdriver (lever), pulley (rope and wheel), screw (inclined plane wrapped around a rod) |
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a machine made of two or more simple machines like garden shears (lever and 2 wedges), hand mower (lever, wedge, wheel and axel), bicycle (wheel and axel, screws, levers) |
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changes the direction of force on the garden shears and the edge of the paint can when using a screwdriver to open it |
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a machine made up of many simple and compound machines like cars |
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if you rub two objects together, negative electric charges can move from one spot to another. Electric charges can be negative or positive; Ex: when you get shocked by your friend when she touches you. |
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the flow of negative charges through matter |
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electric current flows only through a closed circuit. When you flip the switch off, you have opened the circuit to the flow stops. |
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a circuit that connects several objects one after another so that the current flows in a single path |
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a circuit that connects several objects in a way that the current for each object has its own path. |
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