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A 47.0-kg body is moving in the direction of the positive x axis with a speed...

A 47.0-kg body is moving in the direction of the positive x axis with a speed of 270 m/s when, owing to an internal explosion, it breaks into three pieces. One part, whose mass is 7.5 kg, moves away from the point of explosion with a speed of 424 m/s along the positive y axis. A second fragment, whose mass is 4.5 kg, moves away from the point of explosion with a speed of 335 m/s along the negative x axis. What is the speed of the third fragment? Ignore effects due to gravity. How much energy was released in the explosion?

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