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Impulse & Impulse-Momentum Theorem — JEE Main Physics MCQs with Solutions

Free JEE Main Physics Impulse & Impulse-Momentum Theorem MCQs with step-by-step solutions (2 questions). Part of Centre of Mass, Momentum & Collisions. Practise online on Prepizo — no login needed.

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Questions with solutions

Q1 — Impulse & Impulse-Momentum Theorem · easy · numerical
A 60 kg athlete lands from a jump and stops his 6 m/s fall in 0.3 s by bending his knees. The average force on him is:
A. 360 N
B. 3600 N
C. 1200 N  ✓ Correct
D. 120 N
Solution: F = Δp/t = 60×6/0.3 = 1200 N (plus his weight, if asked for the ground reaction).
Q2 — Impulse & Impulse-Momentum Theorem · medium · numerical
Rain drops of total mass 0.1 kg/s hit an umbrella at 10 m/s and stop. The extra force on the umbrella is:
A. 10 N
B. 0.1 N
C. 1 N  ✓ Correct
D. 100 N
Solution: F = v·dm/dt = 10×0.1 = 1 N — a momentum-flux impulse problem.