momentum.pdf - Physics 102 Momentum and Collisions 1 A mass...

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Physics 102 - Momentum and Collisions 1: A mass moves in a perfect circle at constant speed. Is its linear momentum constant? Explain. 2: A horizontal force F pushes a mass M 1 a distance d along a frictionless horizontal surface. Similarly, a horizontal force F pushes a mass M 2 a distance d along a frictionless horizontal surface. Use M 2 > M 1 . Assume that each mass was initially at rest. a: Which mass has the larger kinetic energy? Explain. Hint: use the Work Energy Theorem. b: Which mass has the velocity with the larger magnitude? Explain. c: Which mass has the linear momentum with the larger magnitude? Explain. 3: A 0 . 5 kg rubber ball bounces o a wall (below left). The speed of the ball is 8 m/s before and after the collision. Use = 50 . a: Determine the impulse given to the ball. In other words, find Δ ~ p . b: If the duration of the collision was 0 . 06 s, determine the average force exerted by the wall on the ball. θ θ M 1 M 2 V 2 V 3 M 1 M 2 V 1 4: An object of mass 2 kg moves east at a speed of 3 m/s. A second object of mass 1 kg moves north at a speed of 8 m/s. Determine the magnitude and direction
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