Physics
Grade-7
Easy

Question

What is the fixed velocity of the moving object?

  1. 27 m/s
  2. 25 m/s
  3. 30 m/s
  4. 54 m/s

Hint:

27 m/s

The correct answer is: 27 m/s


    KE = 675 J
    m = 50 kg
    KE = 1 half mv2
    675 space equals space 1 half space left parenthesis 50 right parenthesis space straight v squared
not stretchy rightwards double arrow space straight v squared space equals space fraction numerator 675 space cross times space 2 over denominator 50 end fraction
straight v space equals space 27 space straight m divided by straight s

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