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Per NCERT, average ACCELERATION over a time interval is defined as which ratio?
AChange in position divided by time
BFinal velocity multiplied by time
CChange in speed only
DChange in velocity divided by the time interval: ā = Δv/Δt
Answer & Solution
Correct answer: D. Change in velocity divided by the time interval: ā = Δv/Δt
Per NCERT Eq 2.2, ā = Δv/Δt = (v₂ − v₁)/(t₂ − t₁). The other options misstate.
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