A. 50 J
B. 100 J
C. 150 J
D. 200 J
Correct Answer: Option A
Explanation
From principle of conservation of linear momentum,
(0.05 x 200) + (0.95 x 0) = (0.05 + 0.95) x V (since collision is inelastic).
10 + 0 = V
Thus V = 10m/s.
Recall Kinetic Energy = ½mv²
∴
K.E = 1/2 (0.05 + 0.95) x 10²
K.E = 1/2 (1 x 100) = 50 J.
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