Question

You notice a one-dimensional-thinking snail crawling along one rail of a railroad track. Naturally, you move it to a safer place. But before you do, you observe it as it moves from position ? i =−86.9 cm xi=−86.9 cm to position ? f =−69.5 cm xf=−69.5 cm along the rail, as measured from a nearby joint between two segments of rail. What is the snail's displacement Δ? Δx in centimeters?

Answer 1

Displacement, Δx = - 69.5 - (-86.9) = 17.4 cm

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