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lecture8_tth_2101_S11

# lecture8_tth_2101_S11 - PHYS 2101 Spring 2011 I Momentum II...

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PHYS 2101 I. Momentum II. Impulse-Momentum Theorem III. Motion of the Center of Mass IV. Types of Collisions V. Energy & Momentum in Collisions Spring 2011

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A 12-kg block is initially on a frictionless table. It is connected by a string that runs over a massless, frictionless pulley to an 8-kg block that hangs off the edge of the table. What are the velocity and acceleration of the center of mass after each block has moved 1 m? PHYS 2101 EX1: Spring 2011
Two boxes are launched from the origin of the coordinate system at time t = 0. Box 1 of mass m 1 = 5 kg is shot directly along an x axis (on a frictionless floor), where it moves with a constant speed of 10.0 m/s. Box 2 of mass m 2 = 3 kg is shot with a velocity of magnitude 20.0 m/s, at an upward angle such that it always stays directly above Box 1 during its flight. PHYS 2101 CT1: 1 2 Is the momentum of Box 1 conserved? 1 - yes 2 - no Is the momentum of Box 2 conserved? 1 - yes 2 - no Is the momentum of the two box system conserved?

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