Test SeriesFree PYQsExamsPricing

JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

Two masses of 0.25 kg each move towards each other with speeds 3 m/s and 1 m/s respectively and collide and stick together. Find the final velocity [Orissa JEE 2011]

Answer: (C)

Solution

Taking the direction of the 3 m/s mass as positive, by momentum conservation: 0.25(3) + 0.25(−1) = (0.5)v ⟹ 0.5 = 0.5v ⟹ v = 1 m/s.

Question ID VK-154061