12th Edition

ISBN: 9781265566296

Author: BEER

Publisher: MCG

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In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be create…

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Textbook Question

Chapter 14.1, Problem 14.19P

14.19 and 14.20 Cruiser A was traveling east at 60 mi/h on a police emergency call when it was hit at an intersection by car B, which was traveling south at high speed. After sliding together on the wet pavement, the two cars hit cruiser C, which was traveling north at 45 mi/h and was 63 ft from the intersection at the time of the first collision. Stuck together, the three cars hit a wall and came to a stop at D. Knowing that car B weighs 3600 lb and that each of the cruisers weighs 3000 lb, solve the problems below neglecting the forces exerted on the cars by the wet pavement and treating the cars as point masses.

14.19 Knowing that the coordinates of point D are x_D = 42 ft and y_D = 46.5 ft, determine (a) the time elapsed from the first collision to the stop at D, (b) the speed of car B.

Fig. P14.19 and P14.20

Chapter 14.1, Problem 14.19P, 14.19 and 14.20 Cruiser A was traveling east at 60 mi/h on a police emergency call when it was hit

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Chapter 14.1, Problem 14.18P

Chapter 14.1, Problem 14.20P

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Chapter 14 Solutions

<LCPO> VECTOR MECH,STAT+DYNAMICS

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