Blocks A and B are moving toward each other on a horizontal frictionless surface. Block A has mass 5.0 kg and is moving to the right with speed 8.0 m/s. Block B has mass 15.0 kg and is moving to the left with speed 4.0 m/s. The two blocks collide and stick together. After the collision, the combined object (mass 20.0 kg) has velocity
A) 0.50 m/s to the left
B) 0.50 m/s to the right
C) 1.0 m/s to the left
D) 1.0 m/s to the right
E) 2.5 m/s to the left
F) 2.5 m/s to the right
G) none of the above answers
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Based on our data, we think this problem is relevant for Professor McCormick's class at Abraham Baldwin Agricultural College.