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Two trains simultaneously leave the same train station at noon. One train travels north and the other travels south. The position-time graph or both trains is shown in the accompanying figure.
a. What is the position of the train travelling north at 6.0 h?
600.0 km
b. What is the position of the train travelling south at 6.0 h?
300.0 km
c. What is the distance between the trains at 6.0 h? What is the distance at 10.0 h?
900.0 km, 1500.0 km
d. At what time are the trains 600.0 km apart?
4.0 h
e. Which train is moving more quickly?
Northbound train
Your dog is running around the grass in your back yard. He undergoes successive displacements 3.50 m south, 8.20 m northeast, and 15.0 m west. What is the resultant displacement?
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