Question
A 62kg cyclist changes the speed of a 12kg bicycle from 8.2m/s to 12.7m/s. Determine the work done.
Not sure how to start ! Do I calculate the difference or what and which formula
Not sure how to start ! Do I calculate the difference or what and which formula
Answers
R_scott
the work (energy) is the difference in kinetic energy at the two speeds
work = 1/2 (62 kg + 12 kg) * [(12.7 m/s)^2 - (8.2 m/s)^2] ... Joules
work = 1/2 (62 kg + 12 kg) * [(12.7 m/s)^2 - (8.2 m/s)^2] ... Joules