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Per NCERT, can a particle have ZERO speed at an instant but NON-ZERO acceleration at that instant?
AYES — e.g. a ball thrown upward momentarily has zero velocity at the highest point but acceleration g downward
BNo — zero speed always means zero acceleration
COnly in circular motion
DNo — acceleration is undefined at zero velocity
Answer & Solution
Correct answer: A. YES — e.g. a ball thrown upward momentarily has zero velocity at the highest point but acceleration g downward
Per NCERT Exercise 2.7(a), at the highest point of a vertical throw, v=0 but a=−g. Common JEE conceptual trap.
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