The focus of counterinsurgency (coin) operations generally progresses through three stages. which stage concerns itself with expansion of stability operations across contested regions, idealy using host nation (hn) forces?
a. late stage
b. post stage
c. middle stage
d. initial stage

On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 3.00 m/s.(a) what are the magnitude and direction of the velocity of the red glider after the collision? (b) is this collision elastic?