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Which of the following statements is//ar...

Which of the following statements `is//are` correct ?

A

If the velocity of body changes it must have some acceleration.

B

If the speed of a body changes it must have some acceleration.

C

If the body has acceleration its speed must change

D

If the body has acceleration its speed may change.

Text Solution

Verified by Experts

The correct Answer is:
A, B, D
`a=(dv)/(dt)`, if velocity changes, definetly there will be acceleration if speed changes then velocity also changes so definietly there will be acceleration. Acceleration may be due to change in the direction of velocity only and not magnitude. If body has acceleration its speed may changes if acceleration is due to change in magnitude of velocity.
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