The position of the center of mass of a system of particles moves as x = 4.5 t + 2.4 t² + 1.1 t³, where x is in meters.If the system starts from rest at t = 0, what is its velocity at t = 3.0 s? A)8.0 m/s B)21 m/s C)49 m/s D)64 m/s E)65 m/s

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The Answer of The position of the center of mass of a system of particles moves as x = 4.5 t + 2.4 t² + 1.1 t³, where x is in meters.If the system starts from rest at t = 0, what is its velocity at t = 3.0 s? A)8.0 m/s B)21 m/s C)49 m/s D)64 m/s E)65 m/s

The Position of the Center of Mass of a System