= 14.24 A 6-kg shell moving with a velocity vo (12 m/s)i - (9 m/s)j (360 m/s)k explodes at point D into three fragments A, B, and C of mass, respectively, 3 kg, 2 kg, and 1 kg. Knowing that the fragments hit the vertical wall at the points indicated, deter- mine the speed of each fragment immediately after the explo- sion. Assume that elevation changes due to gravity may be neglected. 22 D y 1.5 m A 4 m 4 m B 2 m 3 m x