A 44.0 kg body is moving in the direction of the positive x-axis
with a speed of 373 m/s when owing to an internal explosion, it
breaks into three pieces. One part, whose mass is 6.5kg, moves away
from the point of explosion with a speed of 438 m/s along the
positive y-axis. A second fragment, whose mass is 5.0 kg, moves
away from the point of explosion with a speed of 378 m/s along the
negative x-axis.
What is...