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Per NCERT §4.4, when a stationary bus suddenly starts, passengers are jerked backward primarily because of which property?
ACentripetal acceleration
BConservation of momentum
CAction and reaction pair
DInertia of rest
Answer & Solution
Correct answer: D. Inertia of rest
NCERT §4.4: while feet move with bus, upper body lags due to inertia of rest. Jerk = transient relative motion before muscles act.
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