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    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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