functional.

Hint: Impulse$-$momentum equation applies from right before impact to right after impact in a split of second. You must do the projectile motion first to get the velocity of the pod right before it hits B to set up the stage for impact. You cannot apply the impulse$-$momentum equation when the pod is still so far away. If the time span delta$-$t in the impulse integral is not infinitesimally small, every force you see, including the weights, will survive the integral and it will be a mess.