The figure shows a system of three particles on which external forces act. The magnitude and
direction of two of them are shown. If the center of mass of this three-particle system is to move
with constant velocity to the right, find the magnitude and direction of the force that must act on
7. (5 pts.)
An object at rest explodes into three pieces. Two equal masses fly off with equal
speeds to the NE and NW directions. Which way does the third piece move?
of first two to N, so third piece must have