Relative Motion
Physics ⇒ Mechanics
Relative Motion starts at 9 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Relative Motion.
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See sample questions for grade 10
A bird flies at 10 m/s north relative to the air. If the wind blows at 5 m/s east, what is the bird's velocity relative to the ground?
A boat moves at 10 m/s in still water. If the river flows at 3 m/s downstream, what is the velocity of the boat relative to the riverbank when moving downstream?
A boat moves at 8 m/s across a river flowing at 6 m/s. What is the resultant velocity of the boat relative to the ground?
A car moves at 70 km/h west and another at 50 km/h east. What is the velocity of the first car relative to the second?
A car moves north at 40 km/h and another car moves south at 60 km/h. What is the velocity of the second car relative to the first?
A cyclist moves at 15 km/h east and the wind blows at 5 km/h west. What is the velocity of the wind relative to the cyclist?
A person swims at 4 m/s across a river flowing at 3 m/s. What is the magnitude of the swimmer's velocity relative to the riverbank?
A person walks at 3 m/s north on a train moving at 20 m/s south. What is the person's velocity relative to the ground?
A person walks at 4 km/h on a moving walkway that moves at 2 km/h in the same direction. What is the person's speed relative to the ground?
A plane flies at 200 km/h north relative to the air. If the wind blows at 50 km/h south, what is the plane's velocity relative to the ground?
A swimmer swims at 2 m/s in still water. If the river flows at 1 m/s perpendicular to the swimmer's direction, what is the resultant velocity of the swimmer relative to the ground?
A train is moving at 80 km/h. A person walks in the same direction at 5 km/h inside the train. What is the person's velocity relative to the ground?
Describe how the concept of relative motion applies to a person running on a moving escalator.
Describe how the velocity of rain appears to a person running in the rain compared to a person standing still.
Describe what is meant by a 'frame of reference' in the context of relative motion.
Explain why a person walking inside a moving bus appears to move faster or slower to an observer outside the bus.
Explain why passengers in a moving train do not feel the motion of the train if it moves at constant velocity.
Explain why the concept of relative motion is important in navigation.
If a train moves east at 60 km/h and a passenger walks west inside the train at 5 km/h relative to the train, what is the passenger's velocity relative to the ground?
If two cars are moving in the same direction at 60 km/h and 50 km/h, what is the velocity of the first car relative to the second?
