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What is the magnitude of kinetic energy of a 20kg box moving at a velocity of 8m/s A. 160 J B. 80 J C. 640 J D. 1280 J
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1 vote
What is the magnitude of kinetic energy of a 20kg box moving at a velocity of 8m/s

A. 160 J

B. 80 J

C. 640 J

D. 1280 J

User AfterWorkGuinness
by
5.2k points

1 Answer

2 votes

Answer:

Step-by-step explanation:


KE=(1)/(2)mv^2 and we are solving for KE:


KE=(1)/(2)(20)(8)^2 which gives us that

KE = 640 J, choice C.

User WiseOldDuck
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5.5k points
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