Question

which units are used to measure both velocity and speed? select three options.
m/s
d/t
km/h
mph
m²

Explanation:

1. Recall the definitions: Speed and velocity both involve the rate of change of distance (or displacement) with time. Their units should be units of length per unit time.

• \( \text{m/s} \): Meters per second is a unit of length (meters) per unit time (seconds), so it can measure both speed and velocity.
• \( \text{d/t} \): This is not a standard unit. It's a formula representation (\( d \) for distance, \( t \) for time) rather than a unit, so it's incorrect.
• \( \text{km/h} \): Kilometers per hour is a unit of length (kilometers) per unit time (hours), so it can measure both speed and velocity.
• \( \text{mph} \): Miles per hour is a unit of length (miles) per unit time (hours), so it can measure both speed and velocity.
• \( \text{m}^2 \): This is a unit of area (length squared), so it's not used for speed or velocity.

Answer:

A. \( \text{m/s} \), C. \( \text{km/h} \), D. \( \text{mph} \)