Free physics question bank
Relative motion in one dimension questions with solutions
Practice Kinematics part-3 Relative motion for JEE Main, JEE Advanced, NEET, and Classes 11–12. Attempt each question, then open it for the full solution.
Showing 1–10 of 66 questions
- NumericmediumKinematics part-3 Relative motion
Car A starts from rest with constant acceleration 4 m s⁻² while car B, initially 10 m ahead, moves in the same direction at constant speed 1 m s⁻¹. Find the time in seconds when A overtakes B.
JEE MainsNEET
Open question & full solution → - MCQmediumKinematics part-3 Relative motion
Cars A and B move on the same straight road in the same direction. At t=0, A is 120 m behind B. Their speeds are 30 m/s and 20 m/s respectively. From t=0, B accelerates uniformly at 2 m/s². What minimum constant acceleration must A have so that A just touches the limiting condition of overtaking B (minimum separation becomes zero)?
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JEE MainsNEETJEE Advanced
Open question & full solution → - MCQmediumKinematics part-3 Relative motion
Two identical balls are projected vertically upward from the same point at an interval of 2 s with the same initial speed 40 m s⁻¹. Take g=10 m s⁻². Height at which they collide is:
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JEE MainsNEET
Open question & full solution → - MCQmediumKinematics part-3 Relative motion
A passenger train 60 m long travels at 80 km h⁻¹. A freight train 120 m long travels at 30 km h⁻¹. Find the ratio of the times taken by the passenger train to completely cross the freight train when (i) both move in the same direction and (ii) they move in opposite directions.
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JEE Mains
Open question & full solution → - MCQmediumKinematics part-3 Relative motion
A swimmer's speed downstream is 16 km h⁻¹ and upstream is 8 km h⁻¹. Find the swimmer's speed in still water and the river speed, respectively.
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JEE MainsNEET
Open question & full solution → - MCQeasyKinematics part-3 Relative motion
Object A moves at 10 m s⁻¹ and object B at 5 m s⁻¹ in the same positive x-direction. A is 100 m behind B. Time taken by A to catch B is:
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JEE MainsNEET
Open question & full solution → - MCQmediumKinematics part-3 Relative motion
Stone A is dropped from rest from the top of a tower. Exactly 2 s later stone B is projected vertically downward from the same point at 30 m/s. Take g=10 m/s². How long after B is projected does B catch A?
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JEE MainsNEETJEE Advanced
Open question & full solution → - MCQeasyKinematics part-3 Relative motion
A 210 m long train moves due north at 25 m s⁻¹. A small bird flies due south just above the train at 5 m s⁻¹. The time taken by the bird to cross the train is:
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JEE MainsNEET
Open question & full solution → - NumericmediumKinematics part-3 Relative motion
Two cars approach each other from 500 m apart, each at 20 m/s. A bird flies between them at 30 m/s. Whenever it reaches a car it rests there for 1 s before starting towards the other car. Count only completed inter-car flights. How many complete flights does it make before the cars meet?
JEE MainsNEETJEE Advanced
Open question & full solution → - MCQmediumKinematics part-3 Relative motionOpen question & full solution →
A boat moves upstream with speed u relative to water in a river. A package falls from the boat unnoticed. After time T the boatman notices it, instantly turns around, and moves downstream with the same speed u relative to water. The time after turning required to catch the package is:
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