Which of the following statements are true for a moving bod…

Physics Motion in a Plane Mix MCQ (Single Correct)

Which of the following statements are true for a moving body?

if its speed changes, its velocity must change and it must have some acceleration

if its velocity changes, its speed must change and it must have some acceleration

if its velocity changes, its speed may or may not change, and it must have some acceleration

if its speed changes, but direction of motion does not change, its velocity may remain constant

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(a, c)

magnitude of velocity is changing hence acceleration is present

Velocity is changing hence it can happen by change in direction also as in a uniform circular motion. Hence acceleration is present.

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