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16 January, 03:02

An object that is thrown straight up falls back to Earth. This is one-dimensional motion. (a) When is its velocity zero? (b) Does its velocity change direction? (c) Does the acceleration due to gravity have the same sign on the way up as on the way down?

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  1. 16 January, 03:07
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    (a) The velocity of object is zero when it is at maximum height.

    (b) The direction of velocity changes as it starts moving downwards after it reaches the maximum height.

    (c) Acceleration due to gravity always acts downwards so its sign remains same.
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