Problem 6: A space vehicle of mass m=300 kg has a speed v=1000 m/s along the positive x-direction. At some instant, it separates into two pieces, with mass m1=100 kg and m2=200 kg. The first piece moves with a speed of 600 m/s at an angle of 300 relative to the x-axis. (a) The speed of the second piece is ________ (b) The kinetic energy of the second piece after the explosion is __________

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