Which of the following does not describe a scalar quantity?A marathoner finished running a distance of 42 [km].A rectangular block displaces 10 [mL] of water when placed in a graduated cylinder.One block weights 2 [kg] heavier than a second block.A rock is thrown upward at 5 [m/s].
Question
Which of the following does not describe a scalar quantity?A marathoner finished running a distance of 42 [km].A rectangular block displaces 10 [mL] of water when placed in a graduated cylinder.One block weights 2 [kg] heavier than a second block.A rock is thrown upward at 5 [m/s].
Solution
The statement that does not describe a scalar quantity is "A rock is thrown upward at 5 [m/s]." This is because it includes both magnitude (5 m/s) and direction (upward), which makes it a vector quantity, not a scalar quantity. Scalar quantities only have magnitude, while vector quantities have both magnitude and direction.
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