Relative Motion
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Q. A train is moving at 72 km/h and passes a platform in 30 seconds. What is the length of the platform if the train is 200 meters long?
Q. A train is moving at 90 km/h and a bird flies at 45 km/h in the opposite direction. What is the speed of the bird relative to the train?
Q. A train leaves a station and travels at 90 km/h. Another train leaves the same station 30 minutes later and travels at 120 km/h. How far from the station will they meet?
Q. A train leaves a station at 70 km/h. Another train leaves the same station 30 minutes later at 90 km/h. How far from the station will they meet?
Q. A train leaves a station at 80 km/h and another train leaves the same station 30 minutes later at 100 km/h. How far from the station will they meet?
Q. A train moving at 72 km/h overtakes a man walking at 6 km/h in the same direction. How fast does the train appear to be moving to the man?
Q. A train moving at 72 km/h passes a man walking at 6 km/h in the same direction. How fast does the train appear to be moving to the man?
Q. A train moving at 72 km/h passes a platform 300 m long. How long does it take to cross the platform completely?
Q. A train travels at a speed of 72 km/h. How far will it travel in 30 minutes?
Q. A train travels at a speed of 90 km/h and a car at 60 km/h. If they start from the same point and travel in the same direction, how far apart will they be after 1 hour?
Q. If a boat can travel 20 km upstream in 4 hours, what is the speed of the current if the speed of the boat in still water is 10 km/h?
Q. If a boat can travel at 15 km/h in still water and the current is 5 km/h, what is the speed of the boat upstream?
Q. If a car travels at a speed of 80 km/h and a bike travels at 60 km/h, how far apart will they be after 1 hour if they start from the same point and travel in the same direction?
Q. If a cyclist travels at 15 km/h and a pedestrian walks at 5 km/h, how much faster is the cyclist than the pedestrian?
Q. If two cars are moving in opposite directions at speeds of 40 km/h and 60 km/h, what is their relative speed?
Q. If two cars are moving towards each other at speeds of 40 km/h and 60 km/h, how long will it take for them to meet if they are 200 km apart?
Q. If two objects are moving in opposite directions with speeds of 10 m/s and 15 m/s, what is their relative speed?
Q. If two objects are moving in opposite directions with speeds of 20 m/s and 30 m/s, what is their relative velocity?
Q. If two objects are moving in opposite directions with speeds of 40 m/s and 60 m/s, what is their relative speed?
Q. If two objects are moving towards each other with speeds of 40 m/s and 60 m/s, how long will it take for them to collide if they are 200 m apart?
Q. Two cars are moving towards each other at speeds of 50 km/h and 70 km/h. If they are 200 meters apart, how long will it take for them to meet?
Q. Two cars are moving towards each other with speeds of 50 km/h and 70 km/h. How long will it take for them to collide if they are 200 meters apart?
Q. Two cars start from the same point and travel in opposite directions at speeds of 70 km/h and 50 km/h. How far apart will they be after 2 hours?
Q. Two cars start from the same point and travel in opposite directions. If car A travels at 70 km/h and car B at 50 km/h, how far apart will they be after 2 hours?
Q. Two cars start from the same point and travel in opposite directions. If car A travels at 40 km/h and car B at 60 km/h, how far apart will they be after 1 hour?
Q. Two cyclists start from the same point and ride in opposite directions at speeds of 12 km/h and 15 km/h. How far apart will they be after 2 hours?
Q. Two cyclists start from the same point and ride in opposite directions at speeds of 15 km/h and 20 km/h. How far apart will they be after 1 hour?
Q. Two observers are moving towards each other at speeds of 20 m/s and 30 m/s. What is the relative velocity of one observer with respect to the other?
Q. Two observers are moving towards each other at speeds of 20 m/s and 30 m/s. What is the relative velocity of one observer as seen by the other?
Q. Two observers are moving towards each other at speeds of 20 m/s and 30 m/s. What is the speed of one observer as seen by the other?
