CP8 Forces doing Work

Question 1

List the four ways that the energy of a system can be changed

Answer 1

through work done by forces, in electrical equipment, by heating, by radiation

Question 2

What is the formula for work done?

Answer 2

Workdone = force x distance moved in the direction of the force

Question 3

What is the unit for work done?

Answer 3

joules

Question 4

What does work done mean?

Answer 4

energy transferred

Question 5

A box is sliding down a ramp. What does it mean to say ‘

Question 6

Define power

Answer 6

the rate at which energy is transferred

Question 7

What is the unit for power?

Answer 7

watt, W

Question 8

What is one watt equivalent to?

Answer 8

1 joule per second