Which expression represents the Velocity Equation?

• A. distance/time
• B. mass x acceleration
• C. force x velocity
• D. acceleration/change in time

Answer: (A)

Velocity is the rate at which position changes with time. For average velocity, that rate is displacement over time, v̄ = Δx/Δt. When distance is used as a measure of how far you’ve moved in a straight line, distance divided by time captures this same idea—the rate at which your position changes. That’s why distance/time best represents velocity in these terms.

Mass times acceleration is a force, per Newton’s second law. Force times velocity isn’t velocity itself; it’s related to power (the rate of doing work) when the force acts along the motion. Acceleration is the change in velocity over time, not the velocity itself.