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17.2.3 Quiz: Understanding Quantities
Question 5 of 10
Which quantity is scalar?
A. 14 m/s² east
B. 25 cm/s to the left
C. 10 miles/hr south
D. 14 m/s
SUBMIT

Sagot :

GinnyAnswer
To determine which of the given quantities is a scalar, let's first understand what a scalar quantity is. A scalar quantity has only magnitude and no specific direction. Examples of scalar quantities include speed, distance, mass, and temperature.

Now, let's examine each option:

A. 14 m/s² east
- This quantity includes both magnitude (14 m/s²) and a direction (east), making it a vector quantity.

B. 25 cm/s to the left
- This quantity includes both magnitude (25 cm/s) and a direction (to the left), making it a vector quantity.

C. 10 miles/hr south
- This quantity includes both magnitude (10 miles/hr) and a direction (south), making it a vector quantity.

D. 14 m/s
- This quantity includes only the magnitude (14 m/s) without specifying any direction, making it a scalar quantity.

Based on the definitions and the given options, the correct answer is:

D. 14 m/s
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