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PHYS_111_Hill_m87rich_Final_Fall_2005 - PHYSICS 111 FINAL...

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PHYSICS 1 11 FINAL EXAM FALL 2005 55. A 2000 kg car travels on a level road at a speed of 30 mls. The driver cuts off the engine and the car stops after traveling a distance of 800 m. Neglecting the effects of air resistance what is the coefficient of friction between the tires of the car and the road? @ T o 3 (b) 0.076 (c) 0.098 (d) 0.27 (e) 0.56 56. A projectile is fired on a level plain with an initial velocity of 200 mls as \ shown to the right. HOW high does the projectile rise in the verZical direction3 Neglect all effects due to air friction. (a) 120 m (b) 250 m (c) 370 m (d) 430 m @) 5 1 0 3 57. A 30 kg box slides down a frictionless inclined plane as shown to the right. Starting from rest how far will it have traveled after 0.4 s? (a) 12 crn (c) 48 ern (d) 58 cm (e) 78 cm / 58. A student whirls a stone on a string just above his head in a horizontal circle. The stone makes one complete revolution each second. If the boy speeds up the stone so it makes two revolutions per second, what happens to the tension in the string?
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59. A box is moving up a frictionless loading ramp as shown to the tight. The box has a speed of 12.0 m/s at the bottom of the ramp. What is its speed at the tap of the ramp? (a) 1.8 W43 (b) 3.8 m/s (c) 7.6 m/s (d) 9.7 mls (e) 10.7 rn/s 0
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PHYS_111_Hill_m87rich_Final_Fall_2005 - PHYSICS 111 FINAL...

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