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Acceleration

17. A: A body...

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17. A: A body can have acceleration even if itsvelocity is zero at a given instant of time.R: A body is momentarily at rest when it reversesits direction of motion.

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Q. Assertion :A body can have acceleration even if its velocity is zero at a given instant of time. Reason: A body is momentarily at rest when it reverse its direction of motion.

Q. Assertion :A body can have acceleration even if its velocity is zero at a given instant of time. Reason: A body is numerically at rest when it reverses its direction.

Q. Assertion :If a body is momentarily at rest, it means that force or acceleration are necessarily zero at that instant. Reason: Force on a body at a given time is determined by the direction of the motion only.

Q. Assertion :A particle may be momentarily at rest and yet have non-zero acceleration Reason: The zero velocity of a particle at any instant does not necessarily imply zero acceleration at that instant.

Q. The magnitude of velocity of a body can change even if its acceleration is zero.

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