You lift a book 1 meter off your table. How would the amount of work you do change if you lift the book 3 meters off the table instead?

Work and energy are measured in

If you push against an object and it doesn’t move, no work is being done on that object.

Which requires more work: lifting a 70-kg sack vertically 2 meters or lifting a 35-kg sack vertically 4 meters? kg sack vertically 4 meters? Which requires more work: lifting a 70-kg sack vertically 2 meters or lifting a 35

It takes 80 J to push a large box 8 m across a floor. Assuming the push is in the same direction as the move, what is the magnitude of the force on the box?

The ability to do work.

Power is measured in

Stored energy.

Suppose a moving car has 3000 J of kinetic energy. If the car's speed doubles,how much kinetic energy will it then have?

Power and time are _________________ related.

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