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Q.

Which of the following statements are correct?
A: Zero velocity of a particle at an instant doesn’t necessarily imply zero acceleration at that instant.
B: If two different particles are moving towards each other with different constant velocities, their position-time graphs   never intersect

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a

Neither A nor B

b

Only B

c

Only A

d

Both A and B

answer is B.

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Detailed Solution

When a body moves with retardation at the time of reversal its velocity is zero but acceleration is not zero.

when they travel with uniform velocity in opposite direction at the time of meeting they have the same position at the same time.

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Which of the following statements are correct?A: Zero velocity of a particle at an instant doesn’t necessarily imply zero acceleration at that instant.B: If two different particles are moving towards each other with different constant velocities, their position-time graphs   never intersect