阿摩線上測驗
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阿摩線上測驗
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1. In an overhead view, right figure shows two straight segments of the walk of an armadillo: d₁ = 5.00 m, d2 = 12.0 m, θ = 60.0° (not drawn to scale). What is the magnitude (m) of the displacement vector that points from start to finish?
(A) 11.2 (B) 5.05 (C) 9.58 (D) 8.07 (E) 4.10