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.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 12
A bird flies at 10 m/s east with respect to air. The wind blows at 5 m/s north. What is the bird's velocity relative to the ground?
A boat heads directly across a river at 4 m/s. The river flows at 3 m/s. What is the direction of the boat's velocity relative to the ground?
A boat moves north at 5 m/s relative to the water, and the river flows east at 3 m/s. What is the magnitude of the boat's velocity relative to the ground?
A car moves at 20 m/s north and another at 15 m/s south. What is the velocity of the first car relative to the second?
A car moves at 25 m/s east. Another car moves at 15 m/s west. What is the velocity of the first car relative to the second?
A cyclist moves at 12 m/s east. The wind blows at 5 m/s west. What is the velocity of the cyclist relative to the air?
A person on a train throws a ball forward at 10 m/s. The train moves at 20 m/s. What is the velocity of the ball relative to the ground?
A person walks at 2 m/s on a train moving at 10 m/s in the same direction. What is the person's speed relative to the ground?
A person walks at 3 m/s north on a ship moving at 7 m/s east. What is the magnitude of the person's velocity relative to the ground?
A swimmer swims at 2 m/s perpendicular to a river flowing at 1.5 m/s. What is the resultant velocity of the swimmer relative to the ground?
A train moves at 60 km/h east. A passenger walks at 5 km/h west inside the train. What is the passenger's velocity relative to the ground?
Define relative velocity.
Describe a situation where two objects have the same velocity but different speeds relative to a third object.
Describe the effect of wind on the relative velocity of an airplane.
Explain the difference between absolute and relative motion.
Explain why the concept of relative motion is important in navigation.
Explain why the velocity of light is not relative in classical mechanics but is in special relativity.
If a person is running at 8 m/s on a moving walkway that moves at 2 m/s in the same direction, what is the person's speed relative to the ground?
If a swimmer swims at 4 m/s in still water and the river flows at 3 m/s, what is the minimum time to cross a 100 m wide river?
If two cars move in the same direction with velocities 30 m/s and 20 m/s respectively, what is the velocity of the first car relative to the second?
