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    Question

    A body is projected upwards with an initial velocity u .

    At the highest point, what is its acceleration?  
    A Zero Correct Answer Incorrect Answer
    B g upwards Correct Answer Incorrect Answer
    C g downwards Correct Answer Incorrect Answer
    D 2g downwards Correct Answer Incorrect Answer

    Solution

    At the highest point, the body's velocity becomes zero momentarily, but acceleration due to gravity (g) still acts downwards.   Thus, even though speed is zero, acceleration is g downwards throughout the motion.   This is why the body starts falling back after reaching the maximum height.

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