Kevin, whose mass is 80 kg, is moving along at a velocity of 4 m/s. He doubles his velocity by going down a hi

Question

Kevin, whose mass is 80 kg, is moving along at a velocity of 4 m/s. He doubles his velocity by going down a hill. How much kinetic energy does he have after going down the hill?

 J

GPT-5 mini · Answer

Kinetic energy KE = 1/2 m v^2. After doubling, v = 8 m/s, so

KE = 1/2 · 80 kg · (8 m/s)^2 = 40 · 64 = 2560 J.

(As a check, initial KE was 1/2·80·4^2 = 640 J, and doubling speed quadruples KE to 2560 J.)

Kevin, whose mass is 80 kg, is moving along at a velocity of 4 m/s. He doubles his velocity by going down a hill. How much kinetic energy does he have after going down the hill?

J

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Kevin, whose mass is 80 kg, is moving along at a velocity of 4 m/s. He doubles his velocity by going down a hill. How much kinetic energy does he have after going down the hill? J

All Answers 1

Submit Your Answer

Kevin, whose mass is 80 kg, is moving along at a velocity of 4 m/s. He doubles his velocity by going down a hill. How much kinetic energy does he have after going down the hill?

J