A force is applied to a spring causing it to stretch. If the applied force is DOUBLED, then the potential energy stored in the spring will be
Energy is measured in the same units as
When a 5 kilogram block is lifted from the ground to a height of 10 meters, the gravitational potential energy of the block
A student does 300 Joules of work pushing a box of books 3 meters due north, then does 400 Joules of work pushing the box of book 4 meters west. She does
According to classical Physics, in which of the following cases is work being done?
A crane raises a 200 Newton weight to a height of 50 meters in 5 seconds. The crane does work at the rate of
The speed of a certain car driven at 80 kph has a kinetic energy of 80,000 Joules. If the speed is reduced to 40 kph, then the kinetic energy will
At what point during the fall of an object from a table will its kinetic energy equal its potential energy?
A 1.0 kilogram pendulum bob is moving 10 meters per second at the very bottom of its swing. If the pendulum rope is 10 meters long, then the bob will rise
The amount of work done against friction to slide a box in a straight line on a level surface depends most on
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