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The speed of a particle is constant, Wil...

The speed of a particle is constant, Will It have acceleration? Justify with an example.

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(i) When a particle is moving with a constant speed along a straight line, it has no acceleration
(ii) When a particle is moving with a constant speed along a circular path, the velocity changes due to the change in direction. Hence it has a acceleration. Ex Revolution of Earth around the Sun.
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