Momentum and CollisionMedium
Question
An open water tight railway wagon of mass 5 × 103 kg coats at an initial velocity 1.2 m/s without friction on a railway track. Rain drops fall vertically downward into the wagon. The velocity of the wagon of the after it has collected 103 kg water will be
Options
A.0.5 m/s
B.2 m/s
C.1 m/s
D.1.5 m/s
Solution
COLM ⇒ m1u1 + m2u2 = (m1 + m2)v
5 × 103 × 1.2 + 0 = (5 + 1) × 103 × v ⇒ v = 1
5 × 103 × 1.2 + 0 = (5 + 1) × 103 × v ⇒ v = 1
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