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Acceleration

A particle wi...

Question

A particle with one dimensional motion with positive value of acceleration must be speeding up.

A

True

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B

False

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Solution

The correct option is B False
Acceleration of a body is defined as the ratio of the rate of change in velocity with respect to its time.
If the initial velocity of a body is negative but acceleration is positive it implies the body is slowing down as the initial velocity is decreased.
Thus, the positive value of acceleration doesn't imply always the body is speeding up.
Hence the statement is false.

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