Physics problem dealing with collision?

Question

A 105kg football player running due north at a speed of 9.5 m/s is tackled by an 80 kg player running in a direction 150 degrees east of north at a speed of 9 m/s. The collision occurs on wet astroturf- so you may ignore friction. In what direction do the entangled players move after the collision? At what speed do they move after the collision?

Answer 1

Momentum is conserved and the center of mass velocity remains constant. Therefore

y) -80*9*cos(30)+105*9.5=(185)*vy

x) 80*9*sin(30)=vx

the resultant speed is
sqrt(vx^2+vy^2)

and the angle is
Atan(vy/vx)

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