Chapter 6: Work & Energy Flashcards Preview

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Flashcards in Chapter 6: Work & Energy Deck (11)
1

What is power measured in?

Watts
1 watt= 1J done in 1s

2

If you double the speed with KE you have how much more energy?

4 times

3

Lever, pulley, wheel&arm, axel, incline plane, wedge, and screw are all what?

Simple Machines

4

For work to be done what has to occur?

Force and movement

5

What are the sources of energy?

Sunlight, Nuclear, and Geothermal energy

6

What form of energy does photosynthesis, solar and wind energy, as well as fossil fuels come from?

Sunlight

7

What are the two main forms of mechanical energy?

Potential and Kinetic

8

If a car is twice as large as another was lifted how much potential energy would it have?

Twice as much

9

If a car speeds up 4 times as fast as it was going how much kinetic energy does it now have?

16 times as much

10

Can a machine multiply input force, distance, or energy?

It can multiply input force and distance but not energy.

11

What is the source of geothermal energy?

Uranium found in the earth.