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Two toy robots, one of mass m, = 2 kg with velocity u, = 1ms 1, %3D and another of mass m2 = 1 kg with velocity u2 = -1ms, are %3D moving towards each other along the same straight line and collided with each other. The collision between them is completely inelastic. 1. What is the velocity of the centre of mass of the system before the collision? (Hint: Two toy robots constitute a system) 2. What are velocities u1cOM and u2cOM of the two robots in the centre-of-mass frame before the collision? (U.COM means the velocity of u, in the COM frame of reference) 3. What fraction of the initial kinetic energy in the laboratory frame is lost during the collision?

Two toy robots, one of mass m, = 2 kg with velocity u, = 1ms 1, %3D and another of mass m2 = 1 kg with velocity u2 = -1ms, are %3D moving towards each other along the same straight line and collided with each other. The collision between them is completely inelastic. 1. What is the velocity of the centre of mass of the system before the collision? (Hint: Two toy robots constitute a system) 2. What are velocities u1cOM and u2cOM of the two robots in the centre-of-mass frame before the collision? (U.COM means the velocity of u, in the COM frame of reference) 3. What fraction of the initial kinetic energy in the laboratory frame is lost during the collision?

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1ms 1, Two toy robots, one of mass m1 = 2 kg with velocity u1 and another of mass m2 = 1 kg with velocity u2 = -1ms1, are %3D %3D moving towards each other along the same straight line and collided with each other. The collision between them is completely 1 inelastic. What is the velocity of the centre of mass of the system before 1. the collision? (Hint: Two toy robots constitute a system) 2. What are velocities u1cOM and U2COM of the two robots in the centre-of-mass frame before the collision? (uxcOM means the Fim velocity of u, in the COM frame of reference) 3. What fraction of the initial kinetic energy in the laboratory frame is lost during the collision? Maximum file size: 250MB, maximum number of files: 1
Transcribed Image Text:1ms 1, Two toy robots, one of mass m1 = 2 kg with velocity u1 and another of mass m2 = 1 kg with velocity u2 = -1ms1, are %3D %3D moving towards each other along the same straight line and collided with each other. The collision between them is completely 1 inelastic. What is the velocity of the centre of mass of the system before 1. the collision? (Hint: Two toy robots constitute a system) 2. What are velocities u1cOM and U2COM of the two robots in the centre-of-mass frame before the collision? (uxcOM means the Fim velocity of u, in the COM frame of reference) 3. What fraction of the initial kinetic energy in the laboratory frame is lost during the collision? Maximum file size: 250MB, maximum number of files: 1
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