Match the following activities. Click the item in the left column. Use the plus sign to move it up or the minus sign to move it down until it matches the correct entry in the right column. Lock your answer in place by clicking the square beside the item. (A checkmark means it is locked.)

force of gravity amount of force times the distance it moves an object
force of wind kind of force used to operate engines
foot-pound English unit of measuring work equal to moving one pound one foot
newton-meter metric measurement of work equal to moving one newton one meter
steam kind of force that pulls things toward the center of the earth
work force used when walking
muscular force force used to turn a windmill

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