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    Question

    What is the acceleration of an object if it starts from

    rest and reaches a speed of 20 m/s in 5 seconds?
    A 4 m/s² Correct Answer Incorrect Answer
    B 5 m/s² Correct Answer Incorrect Answer
    C 10 m/s² Correct Answer Incorrect Answer
    D 2 m/s² Correct Answer Incorrect Answer
    E None of the above Correct Answer Incorrect Answer

    Solution

    Acceleration = (Final velocity - Initial velocity) / Time = (20 m/s - 0) / 5 s = 4 m/s².

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