L4 - work and power

Question 1

define ‘work done’.

Answer 1

when a force on an object causes it to move a certain distance.

Question 2

what is another way of saying work done?

Answer 2

energy transferred.

Question 3

rearrange w=fxd
(work done=force x distance)

Answer 3

f=w/d
d=w/f

Question 4

rearrange p=e/t
(power=work done/time)

Answer 4

e=pxt
t=e/p

Question 5

define ‘power’.

Answer 5

the amount of energy transferred (work done) by an object per unit time.