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11 August, 12:52

A car travels 25.0 miles due east for one hour. Then it travels another 60.0 miles east for an additional hour. What is the average velocity of the entire trip?

A. 17.5 mph east

B. 35 mph east

C. 42.5 mph east

D. 85 mph east

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Answers (1)
  1. 11 August, 16:17
    0
    The average velocity of the entire trip is 42.5 mph east ⇒ answer C

    Explanation:

    The average velocity of an object is its total displacement divided by

    the total time taken.

    It is the rate at which an object changes its position from one

    place to another.

    It is a Vector quantity

    A car travels 25.0 miles due east for one hour

    Then it travels another 60.0 miles east for an additional hour

    We need to find his average velocity of the entire trip

    He is travels due east in the whole trip

    The total displacement that he travels = 25 + 60 = 85 miles east

    He travels the first part in 1 hour and the second part in another hour

    The total time for the whole trip = 1 + 1 = 2 hours

    The average velocity = total displacement : total time

    His average velocity = 85 : 2 = 42.5 miles/hour east

    The average velocity of the entire trip is 42.5 mph east
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