What are some examples of relative speed?

1 Answer
May 15, 2018

Answer:

A passenger in a vagoon walking against the train direction, etc.

Explanation:

There are some examples on this

  1. If a passenger in a vagoon walking against the train direction, of course the train speed is greater and #v_n = v_t - v_p# is the speed. In this formula #v_n# is the net speed and #v_t# and #v_p# are train speed and passenger walking speed respectively.

  2. If there is a river flowing at a constant speed, and a swimmer swimming within the river course (in the same direction), the net speed #v_n = v_r + v_s#
    #v_n# is the net speed and #v_r# and #v_s# are river speed and swimmer's speed respectively.

  3. If there are two athletes competing against each other on the same direction on the track, it is also a example.

  4. Two airplanes flying on the opposite directions with different speeds.

etc.