Q. If two balls each of mass $0.06\ kg$ moving in opposite directions with speed $4\ m/s$ collide and rebound with the same speed, then the impulse imparted to each ball due to other is
A) $0.48\ kg$-$m/s$
B) $0.24\ kg$-$m/s$
C) $0.81\ kg$-$m/s$
D) Zero
Explanation
(a) Impulse = change in momentum $= 2\ mv$
$= 2 \times 0.06 \times 4 = 0.48\ kg\ m/s$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.