Question

You are measuring the average speed of your well-trained dog. The dog runs to the end of a field and back to you. You measure the length of the field, L, and the round-trip time, t, with their uncertainties ΔL and Δt, to calculate the average speed of the dog: v = 2L/t. Using the multiplication and division rule for propagation of uncertainties, select the expression for the absolute uncertainty in the average speed.

Form: r= xy or r= x/y

Rule: Δr/r= Δx/x+ Δy/y

Answer 1

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