As a skateboarder moves downhill, some of the energy of the skateboarder is

A) lost.

B) kinetic.

C) potential.

D) kinetic and some is potential.

System documentation that includes the outcome of such structured diagramming techniques as data-flow and entity-relationship diagrams best defines: A. user documentation. B. application documentation. C. external documentation. D.

You will have to lift a heavy box. The force of gravity pulls it downwards with a force of 500 N. Your father applies an upward force of 220 N How much force you will have to apply to lift it up

a plastic stick attracting small pieces of brightly colored paper. If the stick has a positive charge, then the paper that sticks to it must have

Who wins a tug-of-war one who pushes harder at the ground or pulls harder at the rope

A 20 kg child is on a swing that hangs from 3.0-m-long chains. what is her maximum speed if she swings out to a 49 ∘ angle?

A British newspaper was interested in whether groups of people who differed in social standing were treated differently when they complained to organizations about poor service they had received.

During combustion, a fuel's electromagnetic energy is converted into thermal energy.

Explain why glucose is important to a cell

4. How far does a car travel in 90 seconds if it is traveling at a speed of 55 m/s?

Total energy input is 1400 and my efficiency is 80% so what is the useful energy output in jules?