Relative Motion

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The following physics revision questions are provided in support of the physics tutorial on Relative Motion. In addition to this tutorial, we also provide revision notes, a video tutorial, revision questions on this page (which allow you to check your understanding of the topic) and calculators which provide full, step by step calculations for each of the formula in the Relative Motion tutorials. The Relative Motion calculators are particularly useful for ensuring your step-by-step calculations are correct as well as ensuring your final result is accurate.

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Kinematics Learning Material
Tutorial IDTitleTutorialVideo
Tutorial
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Notes
Revision
Questions
3.13Relative Motion

Relative Motion Revision Questions

1. A car is moving due East at 16 m/s. A cyclist initially at 60 m on the East of the car is riding at 2 m/s due East as shown in the figure.

Physics Tutorials: This image provides visual information for the physics tutorial Relative Motion

What will be the position of the cyclist in respect to the car after 5 s?

  1. 20 m due West
  2. 20 m due East
  3. 10 m due West
  4. 10 m due East

Correct Answer: C

2. Two pedestrians initially at a distance of 36 m away between them, are moving towards each other. The first pedestrian (on the left) moves due East at constant velocity of 1 m/s while the other pedestrian starts moving from rest and accelerates at 0.2 m/s2 due West as shown in the figure.

Physics Tutorials: This image provides visual information for the physics tutorial Relative Motion
  1. 14.6 s
  2. 39.2 s
  3. 29.2 s
  4. 30.0 s

Correct Answer: A

3. Two cars are moving at constant velocities in opposite directions as shown in the figure.

Physics Tutorials: This image provides visual information for the physics tutorial Relative Motion

The initial distance between the cars is 200 m. The blue car stops immediately after 5 s and the red car stops immediately as well but after 15 s. What is the position of the blue car (the car 2) in respect to the red car (the car 1) at the end of their motion?

  1. 20 m due East of the red car
  2. 20 m due West of the red car
  3. 40 m due West of the red car
  4. 100 due East of the red car

Correct Answer: B

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  2. Kinematics Physics tutorial: Relative Motion. Read the Relative Motion physics tutorial and build your physics knowledge of Kinematics
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  4. Check your calculations for Kinematics questions with our excellent Kinematics calculators which contain full equations and calculations clearly displayed line by line. See the Kinematics Calculators by iCalculator™ below.
  5. Continuing learning kinematics - read our next physics tutorial: Motion. Types of Motion

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