Physics 15200- HW13

# Physics 15200- HW13 - ²ind the fnal velocity oF the...

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lai (yl8859) – HW13 – Ross – (15200) 1 This print-out should have 6 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 10.0 points A 9 kg steel ball strikes a wall with a speed oF 11 m / s at an angle oF 42 . 5 with the normal to the wall. It bounces o± with the same speed and angle, as shown in the fgure. x y 11 m / s 9 kg 9 kg 42 . 5 42 . 5 IF the ball is in contact with the wall For 0 . 198 s, what is the magnitude oF the average Force exerted on the ball by the wall? Answer in units oF N. 002 (part 1 oF 3) 10.0 points The Force oF magnitude F x acting in the x direction on a 2 . 4 kg particle varies in time as shown in the fgure. 0 1 2 3 4 5 0 1 2 3 4 F x (N) t (s) ²ind the impulse oF the Force. Answer in units oF N · s. 003 (part 2 oF 3) 10.0 points ²ind the fnal velocity oF the particle iF it is initially at rest. Answer in units oF m / s. 004 (part 3 oF 3) 10.0 points
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Unformatted text preview: ²ind the fnal velocity oF the particle iF it is initially moving along the x axis with a velocity oF-9 m / s. Answer in units oF m / s. 005 10.0 points A(n) 78 kg man, standing erect, steps o± a 4 m high diving platForm and begins to Fall From rest. The man comes to rest 2 . 4 s aFter reaching the water. The acceleration oF gravity is 9 . 8 m / s 2 . What average Force did the water exert on him? Answer in units oF N. 006 10.0 points A golF ball ( m = 69 . 8 g) is struck a blow that makes an angle oF 42 . 8 ◦ with the horizontal. The drive lands 247 m away on a ³at Fairway. The acceleration oF gravity is 9 . 8 m / s 2 . IF the golF club and ball are in contact For 9 . 63 ms, what is the average Force oF impact? Neglect air resistance. Answer in units oF N....
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