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7 October, 04:15

Which has the most kinetic energy from its motion?

a) a 1,100-kg car traveling 60 km/h

b) a 300-kg motorcycle traveling 100 km/h

c) a 900-kg car traveling 80 km/h

d) a 2,000-kg truck traveling 50 km/h

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Answers (1)
  1. 7 October, 06:54
    0
    option c

    Explanation:

    K. E=1/2mv (squared)

    K. E=1/2x900x80x80

    K. E=450x6400=2880000J

    convert to KJ=2880000/1000=2880KJ
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