A boat passes under a bridge. At the instant the boat passes from under the bridge an arrow is fired horizontally, striking the boat after 0.0128 hrs. The boat traveled 0.072 km in the same time the arrow was in the air. (Assume a = -10 m/s2) Calculate the boat’s velocity in m/s. Show all conversions with cancellations (3 pts; 1 pt formula, 1 pt setup with cancellations, 1 pt answer)

In m/s, what must the horizontal velocity of the arrow be in order to strike the boat as stated in the prompt? Justify your answer. (1 pt)

What is the initial vertical velocity of the arrow? Justify your answer. (1 pt)

How far does the arrow fall? (3 pts; 1 pt formula, 1 pt substitution, 1pt answer)

What is the vertical velocity of the arrow just before it strikes the ground? (3 pts; 1 pt formula, 1 pt substitution, 1 pt answer)