C2M.6 A helium atom with mass m initially moving at a speed of Vol in a certain direction collides with an oxygen atom of mass 4m at rest. After the collision, the helium atom is observed to move at a right angle with its initial motion at a speed of Vol. Assume this process happens so rapidly that gravity does not have enough time to change either atom's momentum signifi- cantly. (a) Draw initial and final momentum arrows for the first atom and infer from your drawing the magnitude and qualitative direction of the impulse delivered to each atom (express the magnitude as a multiple of mol). (b) Infer from your drawing the magnitude and qualitative direc- tion of the oxygen atom's final velocity v2 (express its mag- nitude in terms of vol).