Question

answer this question please

Answer 1

first convert 36km/hr to SI units, i.e, m/s

36 x 5/18 = 10 m/s

The change in energy is the amount of work done(work-energy theorem)

Hence, Work done= 1/2 m v^2

= 1/2 x 2000 x 10 x 10 = 100000J of work or 100 kJ of work

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Answer 2

Answer:

100 kilojoules.

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