HW5 - Oregon State University Physics 201 Fall Fall Term,...

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Oregon State University Physics 201 , Fall 2009 HW5 (due Nov. 2 at 5:00 p.m.) Page 1 Oregon State University Physics 201 Fall Term, 2009 HW5 This HW assignment, due November 2, covers topics in Chapter o 9 of the text—freely mixed together (and youʼll need the basics of projectile motion, too). Donʼt forget the extra credit point available. Follow the recommended format for solutions, with SI units unless directed otherwise and 3 signi± cant digits in all numerical answers. Use a separate page for each solution—donʼt crowd your solutions on a page. Assume that the magnitude of local gravitational acceleration, g, is 9.80 m/s 2 . 1. A 250-kg projectile is f red From the ground with a speed oF 120 m/s at a 60.0° angle above the hori- zontal. At the highest point oF its arc, it explodes into three pieces, A, B and C, all oF equal mass. Immediately aFter the explosion, pieces A and B are still moving with the same speed as the whole projectile had right beFore the explosion. However, A is moving vertically downward, and B is mov- ing horizontally Forward (i.e. in the same direction as the projectile prior to its explosion). ±ind the velocity oF C right aFter the explosion. 2. Two pucks collide on a level air-hockey table. Puck A has a mass oF 0.0250 kg and is moving ini- tially due eastward at a speed oF 5.50 m/s. Puck B has a mass oF 0.0500 kg and is initially at rest. Right aFter the collision, puck A is moving in a direction 65.0° north oF east; and puck B is moving in
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This note was uploaded on 01/13/2010 for the course PH 201 taught by Professor Staff during the Fall '08 term at Oregon State.

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HW5 - Oregon State University Physics 201 Fall Fall Term,...

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