3D vector magnitude:
Ktot = K1 + K2 + K3
K1 = (1/2)m1v12 = (1/2)(m1)(v1x2 + v1y2 + v1z2) = (1/2)(2)((10)2 + (-5)2 + (12)2) = 269 J
Consider a system consisting of three particles with velocities given in terms of a 3D coordinate system (x, y, and z axes):
m1 = 2 kg, v1 = < 10, -5, 12 > m/s
m2 = 9 kg, v2 = < -14, 3, -3>m/s
m3 = 2 kg, v3 = < -23, 37, 20 > m/s
What Is the total kinetic energy of thls system?
Ktot = _____ J
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