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A 200 kg motorcycle initially moving at 20 m/s applies its brakes. How much work was done to stop the motorcycle?
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A 200 kg motorcycle initially moving at 20 m/s applies its brakes. How

much work was done to stop the motorcycle?

User Morandg
by
3.1k points

1 Answer

5 votes

Answer:

-40,000 J

Step-by-step explanation:

Initial kinetic energy E1 = mv^2/2 = 200*20^2/2 = 40,000 J

Final kinetic energy E2 = 0

Work done = E2 - E1 = -40,000 J

User SuavePirate
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3.6k points
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