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9th Class Science Sample Paper Science Olympiad Model Test Paper-21

  • question_answer
    A car of mass 1200 kg is moving along a straight line with a uniform velocity of 18 km/h. Its velocity increases to 90 km/h in 4 s by an unbalanced external force. Find the magnitude of the force.

    A) 2000 N

    B) 3000 N

    C) 4000 N

    D) 6000 N

    E) None of these

    Correct Answer: D

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