The cyclist used the brakes to slow down and stop the bicycle. A constant braking force of 140 N stopped the bicycle in a distance of 24 m. Calculate the work done by the braking force to stop the bicycle. Give the unit. (3 Marks)

Work done= force x distance.Here we are told that the force is 140N. The braking distance of the bike is 24m. Therefore, work done is 140 x 24=3360 (2 marks) Joules.(1 mark)The units of work done are Joules. Named after the english physicist James Joule.So the answer is 3360 Joules.

Answered by Tate C. Physics tutor

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