005 (part 1 of 2) 10.0 points A runner is jogging in a straight line at a steady vr= 4.5 km/hr. When the runner is L= 7 km from the finish line, a bird begins flying straight from the runner to the finish line at vb= 9 km/hr (2 times as fast as the runner). When the bird reaches the finish line, it turns around and flies directly back to the runner. Ub Ur finish line L What cumulative distance does the bird travel? Even though the bird is a dodo, as- sume that it occupies only one point in space (a "zero" length bird), travels in a straight line, and that it can turn without loss of speed. Answer in units of km. 006 (part 2 of 2) 10.0 points After this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. The bird repeats the back and forth trips until the runner reaches the finish line. How far does the bird travel from the be- ginning (including the distance traveled to the first encounter)? Answer in units of km.018 10.0 points During a baseball game, a batter hits a high pop-11p. If the ball remains in the air for 5.13 s, how high above the point where it hits the bat does it rise? Assume when it hits the ground it hits at exactly the level of the bat. The acceleration of gravity is 9.8 m/s2 . Answer in units of m. 019 10.0 points An engineer in a locomotive sees a car stuck on the track at a railroad crossing in front of the train. When the engineer rst sees the car, the locomotive is 240 m from the crossing and its speed is 24 m/s. If the engineers reaction time is 0.32 s, what should be the magnitude of the mini mum deceleration to avoid an accident? Answer in units of m/sg