An object moves metres east and metres north

PHYSICS · Single correct · CBSE · Physics · Motion in a Plane · Motion in a Plane

Problem

An object moves Δx\Delta x metres east and Δy\Delta y metres north. Which of the following expressions gives the magnitude of its displacement? (a) Δx+Δy\Delta x + \Delta y (b) (Δx)2+(Δy)22\sqrt{\dfrac{(\Delta x)^2 + (\Delta y)^2}{2}} (c) (Δx)2+(Δy)2\sqrt{(\Delta x)^2 + (\Delta y)^2} (d) ∣ Δx−Δy ∣|\,\Delta x - \Delta y\,|

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