A 2.0 kg snowball is thrown at 18 m/s . It hits and sticks to a 5.2 kg package sitting on a porch How fast they now be moving? Show your work, assume the system is ciosed.

An owl dives toward the ground with a constant velocity of 4.40 m/s at 53.0° below the horizontal. the sun is directly overhead and casts a shadow of the owl directly below it. what is the speed (in m/s) of its shadow on level ground?