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23 September, 16:51

Which of the following is a vector quantity?

a) 83 ounces of liquid

b) 10 m/s down

c) 15 seconds of travel

d) 55 km/hr in a truck

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Answers (1)
  1. 23 September, 17:02
    0
    Answer: b) 10 m/s down

    Explanation:

    Let's start by explaining that a vector is one that has a numerical value along with its units (called a module) and a direction, while a scalar is only determined with a number and its corresponding units, without direction.

    Then, if we are given a quantity with only a numerical value along with its units we will have a scalar, and when we have a quantity with its numerical value along with its units and also the direction is given, we will have a vector.

    So, according to this explanation, the only option that fullfils the conditions of a vector is b:

    10 m/s down

    Because we have a numerical value (10) with ist units (meters per second) and its direction (down).
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