madelynejones3 madelynejones3

22-06-2022
Physics

contestada

how can you tell the difference between an expression of speed and an expression of velocity?
A. velocity has unit expressed as distance/time; speed does not.
B. speed has units expressed as distance/time; velocity does not.
C. speed includes a direction; velocity does not.
D. velocity includes a direction; speed does not.

Respuesta :

22-06-2022

Answer= D. Velocity includes a direction; speed does not.

Velocity and speed both have the same units of m/s, so answers A and B are wrong.

Velocity is a vector quantity and so has direction and magnitude, so C is wrong.

Speed is a scalar quantity, only having magnitude and no direction.

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