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Unformatted text preview: Oregon State University Physics 201 , Fall 2009 HW3 (due Oct. 19 at 5:00 p.m.) Page 1 Oregon State University Physics 201 Fall Term, 2009 HW3 This HW assignment, due October 19, covers topics in Chapter o 3 of the text. Donʼt forget the extra credit point that is available, too. Follow the recommended format for problem solutions, with SI units unless directed otherwise and 3 signi¡ cant digits in all numerical answers. Use a separate page for each solution—do NOT crowd your solutions on a page. 1. While installing an antenna on your roof, you lose your footing and slide off the roof. Fortunately, you have placed a safety net whose center is positioned at a horizontal distance of 4.15 m, measured from a point directly below the edge of the roof—and indeed you land in the center of the net. If the roof slopes downward at a 26° angle below the horizontal, and your speed as you leave the roof is 3.70 m/s, how high is the edge of the roof above the level of the safety net? 2. A golfer hits a golf ball eastward from an elevated tee area onto a level fairway below. 1.35 seconds after the ball is hit, it reaches its maximum height. The initial angle of the ballʼs motion off the tee is 24.0° above the horizontal. If the tee level is 12.0 m above the level of the fairway, how far east of the tee does the ball hit the fairway? 3. A soccer player kicks a ball from the ground into the goal, which is located 17.0 m away on the level playing ¡ eld. The ball leaves the ground at an initial speed of 18.0 m/s and at an initial angle above the horizontal of 23°. Find the angle of the ballʼs velocity (with respect to the horizontal) as it enters the goal....
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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.
- Fall '08