Q3 - When a ball thrown upwards

Last updated at September 16, 2026 by

  • ๐Ÿ“‹ Revise, Reflect, Refine, Q3 (Page 137)
    When a ball thrown upwards reaches its highest point, tick which of the following statement(s) are correct?
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    Answer
    Statement Correct? Reason
    (i) The force acting on the ball is zero ✗ Gravity (mg) still acts on it
    (ii) The acceleration of the ball is zero ✗ Acceleration due to gravity g still acts (downward)
    (iii) Its kinetic energy is zero ✓ At the highest point, velocity = 0, so KE = 0
    (iv) Its potential energy is maximum ✓ Height is maximum, so PE = mgh is maximum
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