Ch04-p090 - 90 We use a coordinate system with x eastward and y upward(a We note that 123 is the angle between the initial position and later

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ˆˆ ˆ = [( 755 m) (276 m)]i +(231 m 231 m) j (1031 m) i. r Δ− = G The magnitude of the displacement r Δ G is | | 1031 m. r Δ= G (b) The direction of r Δ G is ˆ i , or westward. 90. We use a coordinate system with + x eastward and + y upward. (a) We note that 123° is the angle between the initial position and later position vectors, so that the angle from + x to the later position vector is 40° + 123° = 163°. In unit-vector
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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