A gadget of mass 17.35 kg floats in space without motion. Because of some internal malfunction, the gadget violently breaks up into 3 fragments flying away from each other. The first fragment has mass m1 = 7.56 kg and speed v1 = 2.31 m/s while the second fragment has mass m2 = 5.02 kg and speed v2 = 8.4 m/s. The angle between the velocity vectors v1 and v2 is θ12 = 72◦.  What is the speed v3 of the third fragment?

College Physics
11th Edition
ISBN:9781305952300
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Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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A gadget of mass 17.35 kg floats in space without motion. Because of some internal malfunction, the gadget violently breaks up into 3 fragments flying away from each other. The first fragment has mass m1 = 7.56 kg and speed v1 = 2.31 m/s while the second fragment has mass m2 = 5.02 kg and speed v2 = 8.4 m/s. The angle between the velocity vectors v1 and v2 is θ12 = 72

What is the speed v3 of the third fragment?

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