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science
motion, forces,and energy unit 2
Question | Answer |
---|---|
work | move an object some same distance in the direction of the force. |
power | is the rate at which work is done. |
energy | is the ability to do work. |
kinetic energy | is the energy of motion. |
potential energy | its position, condition, or chemical composition. |
mechanical energy | by an object due to its motion and position. |
machine | changing the way work is done. |
lever | pivots at a fixed point. |
wheel and axle | cylindrical object, the axle |
pulley | holds a rope or cable. |
inclined plane | that is a straight, slanted surface. |