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12 November, 03:30

Question 5 ListenA ball is thrown straight upward from the surface of Earth. Which statement best describes the ball’s velocity and acceleration at the top of its flight? Both velocity and acceleration are zero. Velocity is zero and acceleration is nonzero. Velocity is nonzero and acceleration is zero. Both velocity and acceleration are not zero.

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  1. 12 November, 04:34
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    Acceleration is non zero but the velocity is zero.

    Answer: Option 2.

    Explanation:

    Acceleration is the speed that an object gains with in a short period of time. In the language of Mechanics, Acceleration is the change in the velocities of the objects with respect to the time. So when a ball is thrown up in the air, there will be some acceleration and there will be some speed that the ball will gain when thrown up.

    Velocity is the speed of an object but in a particular direction. Velocity of an object is the rate of change of the position of the object with respect to the frame of reference of that frame. So the velocity of the ball up in the air is zero.
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