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  • IMAT 2016 Q59 Physics and Mathematics

  • Nicolas Sanchez

    June 22, 2021 at 8:02 am
    1023 Replies
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    A ball is projected vertically upwards and then falls back to its original position.
    Once projected, the ball experiences only a single force, downwards, due to a constant gravitational field strength of 10 N/kg.
    Here are three statements about the ball:
    1 When the ball is moving upwards it loses kinetic energy and gains potential energy.
    2 The magnitude of the ball’s acceleration increases as it falls.
    3 No vertical forces act on the ball when it is at its maximum height.
    Which of the statement(s) is/are correct?

    A. 2 and 3 only

    B. none of them

    C. 1 and 2 only

    D. 3 only

    E. 1 only

  • Ben Naz

    August 5, 2021 at 3:15 pm
    6 Replies
    63500 XP
    Reputation: Level 6

    As a ball goes up it gains gravitational potential energy but slows down and therefore
    loses kinetic energy. However, the acceleration of the ball as it goes down is constant.
    At the balls maximum height there are vertical forces acting on the ball, which cause it
    to move downwards. Therefore E is the correct answer.

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