Relative Motion Concepts
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Q. A boat is moving across a river at a speed of 8 km/h, while the river flows at 3 km/h. What is the resultant speed of the boat relative to the riverbank?
Q. A boat is moving upstream at a speed of 10 km/h in a river that flows downstream at 5 km/h. What is the speed of the boat relative to the riverbank?
Q. A car is traveling at 60 km/h on a straight road. If another car is moving in the same direction at 80 km/h, what is the speed of the second car relative to the first car?
Q. A child is riding a bicycle at 5 m/s on a moving bus that travels at 15 m/s in the same direction. What is the child's speed relative to the ground?
Q. A cyclist is riding at 15 km/h on a road that is moving at 5 km/h in the same direction. What is the cyclist's speed relative to the ground?
Q. A cyclist travels at 15 km/h on a road that is moving at 5 km/h in the same direction. What is the cyclist's speed relative to the road?
Q. A person is running at 10 m/s on a moving walkway that moves at 2 m/s in the same direction. What is the person's speed relative to a stationary observer?
Q. A person walks at a speed of 4 km/h on a train moving at 60 km/h in the same direction. What is the person's speed relative to the ground?
Q. A plane is flying at 250 km/h relative to the air, which is moving at 50 km/h against the direction of the plane. What is the plane's speed relative to the ground?
Q. A swimmer can swim at 3 km/h in still water. If the current of the river is 2 km/h, what is the swimmer's speed relative to the bank when swimming upstream?
Q. A train is moving at 90 km/h and a passenger inside walks towards the front of the train at 5 km/h. What is the passenger's speed relative to the ground?
Q. If a car is moving at 80 km/h and a cyclist is moving at 20 km/h in the opposite direction, what is the speed of the cyclist relative to the car?
Q. If a person walks at 4 km/h on a train that is moving at 60 km/h in the same direction, what is the person's speed relative to the ground?
Q. If a plane is flying at 200 km/h and the wind is blowing at 50 km/h in the opposite direction, what is the plane's speed relative to the ground?
Q. If a swimmer can swim at 3 m/s in still water and the current of the river is 1 m/s, what is the swimmer's speed relative to the bank when swimming upstream?
Q. Two cars are moving towards each other, one at 50 km/h and the other at 70 km/h. What is the speed of one car relative to the other?
Q. Two trains are moving towards each other on parallel tracks. Train A is moving at 90 km/h and Train B at 70 km/h. What is the speed of Train B relative to Train A?
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