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Choose the correct statement(s):...

Choose the correct statement(s):

A

If a particle moving in a straight line has a negative acceleration then this always meant that the speed is decreasing.

B

If speed of a particle moving in straight line changes, it must have non-zero acceleration.

C

Acceleration of a particle is negative if it is moving in +ve direction with decreasing speed.

D

Rate of change of speed is magnitude of acceleration at any instant.

Text Solution

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The correct Answer is:
B, C
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