An unstable nucleus with a mass of 18 x 10-27 kginitially at rest disintegrates into three particles. one ofthe particles, of mass 4.8 x 10-27 kg, moves along thepositive y axis with a speed of 8 x 106 m/s. another particle, of mass 8.4 x 10-27 kg, moves alongthe positive x axis with a speed of 4 x 106 m/s. (assume that mass is conserved).
a) determine the third particle's speed. (m/s)
b) what is the direction of motion?