Position vs Time Graphs & Relative Velocity Practice Problems



1.?Which of the following position-time graphs shows an object moving forward 5 meters in 2 seconds??a.??b.??c.??d.?2.??A train is headed east at a velocity of 50.4?mph.?Another train?is?291 miles east?from the first train and?headed west?on the same track?at a speed of?68.1?mph. How?many hours?pass before the trains collide? Round your answer to?2 decimal places.?3.?The position-time graph given below represents the motion of Bill riding his bike. What is Bill's average velocity (in m/s) during these 10 seconds? Round your answer to?2 decimal places.??4.?The position-time graph given below represents the motion of Bill riding his bike. What is Bill's instantaneous speed (in m/s) at 2 seconds? Round your answer to?2 decimal places.??5.?The position-time graph given below represents the motion of Bill riding his bike. What is Bill's displacement (in meters) between 5 to 10 seconds? Round your answer to?2 decimal places.??6.?A confused?flight attendant walks?6.9 m/s relative to the belt of a moving walkway against the flow of the walkway at an airport. The belt of the?moving walkway is moving 3.61?m/s?relative to the ground. What is the speed of the?flight attendant?(in m/s) relative to the ground? Round your answer to?2 decimal places.7.?Rover the golden retriever is walking east at a steady speed of?0.53 m/s.?Felix the flea walks from one of Rover's shoulder blades to the other?at a speed of 1.14?m/s. What is the Felix the flea's velocity (in m/s)?relative to the ground? Round your answer to?2 decimal places.8.?Bugs in the rainforests of the Amazon Jungle can move much faster if they move in a swarm than if they travel alone. This is accomplished by walking in three tiers (kind of like a human pyramid, but while everyone is crawling forward). If the bottom tier is moving?8.35 cm/s relative to the ground, the second tier is moving?8.7 cm/s relative to the first tier, and the third tier of bugs is moving?10.86 cm/s relative to the second tier; how fast (in cm/s) is the third tier of bugs moving relative to the ground?? Round your answer to?2 decimal places.9.?An kayaker paddles directly?across a rushing?river from one bank to the other at a velocity of?5.79?m/s relative to the river. The river flows with a velocity of?5.52?m/s ?relative to the shore. If the width of the river is 22?m, how long does it take the kayaker?(in seconds) to reach the other shore?? Round your answer to?2 decimal places.10.?A?kayaker is?paddling directly?from one shore of a river?to the other with a velocity of 6.13?m/s relative to the river. The velocity of the river relative to the shore is 5.98?m/s. If the width of the river is 20?m, how far does the kayaker get pushed downstream (in meters)?before reaching the other shore?? Round your answer to?1 decimal place.Answer Key1.?a2.?2.46?3.?2.504.?5.005.?06.?3.29?7.?1.26?8.?27.91?9.?3.810.?19.5? ................
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