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Identify which of the following are valid (correct) velocities. (More than one correct answer)

A. 46 m/s
B. 3.5 mph east
C. 67 km/hr west
D. 33.5
E. 0 m/s north
F. 6.3 mph

Answer :

Final answer:

The valid velocities are 46 m/s, 67 km/hr west, and 0 m/s north.

Explanation:

In physics, it's crucial to use consistent units and include directional information when expressing velocities. Let's delve into the explanation for the correct choices:

a. 46 m/s: This option provides a velocity in meters per second, which is the standard SI unit for velocity. The direction is not explicitly mentioned, but the absence of a specified direction doesn't invalidate it as a velocity.

c. 0 m/s north: Even though the magnitude is zero, indicating no speed, it still qualifies as a velocity since it includes direction (north). Direction is a key component when describing velocity, even when the magnitude is zero.

e. 67 km/hr west: While the unit is not in the standard SI form (meters per second), it still represents a valid velocity. The inclusion of direction (west) is crucial for defining velocity accurately.

Options b, d, and f are excluded due to issues with units or missing directional information. Consistency in units and the inclusion of direction are vital in accurately describing velocities in physics.

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