Refer to Exhibit 8-1 Below $\degree$ Angle to the Ground $\frac{\mathrm{kg} \cdot \mathrm{~m}}{\mathrm{~s}}$

Multiple Choice

Refer to Exhibit 8-1 below.Exhibit 8-1 Two birds of prey hurtling after the same rabbit collide in mid-air and grab each other with their talons. Each 250-g bird is flying at 30 m/s at a 60 $\degree$ angle to the ground. What is the horizontal component of their momentum, in $\frac{\mathrm{kg} \cdot \mathrm{~m}}{\mathrm{~s}}$ , immediately after the collision?

A) 0
B) 6.1
C) 7.5
D) 13
E) 15