17. The drawing shows three particles that are moving with different ve- locities. Two of the particles have mass m, and the third has a mass 2m. At the instant shown, the center of mass (cm) of the three particles is at the coordinate origin. What is the velocity vam (magnitude and direction) of the center of mass? m +4.0 m/s -8.0 m/s cm Ucm = ? +6.0 m/s 2m

17. The drawing shows three particles that are moving with different ve- locities. Two of the particles have mass m, and the third has a mass 2m. At the instant shown, the center of mass (cm) of the three particles is at the coordinate origin. What is the velocity vam (magnitude and direction) of the center of mass? m +4.0 m/s -8.0 m/s cm Ucm = ? +6.0 m/s 2m

Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter9: Linear Momentum And Collisions

Section: Chapter Questions

Problem 28P: The vector position of a 3.50-g particle moving in the xy plane varies in time according to...

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The vector position of a 3.50-g particle moving in the xy plane varies in time according to r1=(3i+3j)t+2jt2, where t is in seconds and r is in centimeters. At the same time, the vector position of a 5.50 g particle varies as r2=3i2it26jt. At t = 2.50 s, determine (a) the vector position of the center of mass of the system, (b) the linear momentum of the system, (c) the velocity of the center of mass, (d) the acceleration of the center of mass, and (e) the net force exerted on the two-particle system.
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