·4.10 understand that work done is equal to energy transferred
PFY p.112
1.
a) The work done (measured in joules) is equal to the force (in newtons) multiplied by the distanced moved (in metres)
b) 1 joule is the work done when a force of one newton moves through a distance of one metre (in the direction of the force)
d) work done= energy transferred
work done = force x distance.
work done = 5 newtons x 2 metres.
= 10J
work done = force x distance
work done = 500 newtons x 40 metres.
= 20KJ or 20000J
Collins p. 91
work done = force x distance
work done = 50000/4000
= 12.5m
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