Robert Lindblom Math & Science Academy



NameDate Pd UNIT II: Worksheet 7For each problem, show a motion map, a position vs. time graph, and a velocity vs. time graph, as well as your solution.A Labrador retriever runs 50 meters in 7.20 seconds to retrieve a bird. The dog then runs half way back in 3.85 seconds. Determine the average speed and average velocity of the dog.A hungry bat finds the mother lode of flying insects between the headlights of two bicycles cruising towards each other through Washington Park. The bikes are 100 meters apart at the start and one has a speed of 8.0 m/s and the other a speed of 10.0 m/s. The bat has a speed of 20.0 m/s. Assume that the bat flies from the front tire of one bike straight to the front tire of the other bike, then turns around with no delay and heads towards the other bike. This is repeated until both bikes and the bat are at the same place. Determine how far the bat flies during this flying feast.An Indy 500 car is driving along a straight track. It travels at 60 m/sec for 5 seconds, then travels 50 m/sec for 4 seconds, then 40 m/sec for 3 seconds. What is the car’s average velocity? What is its total displacement?A jet travels 2,250 km westward at a speed of 960 km/hr. It then encounters a strong headwind and its speed drops to 805 km/hr for the next 1,320 km of its westward trip. What is the average velocity for the trip?Two Metra trains are on separate but parallel tracks. One has a speed of 90 km/hr, the other 80 km/hr. Initially, the two trains are 2.71 km apart. How long will it take the two trains to pass each other? A Ford is traveling with a speed of 15 m/s and is 200 meters ahead of a Chevy traveling in the same direction at 20 m/s. How far will the Chevy travel before catching up to the Ford? ................
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