Problem 2: For the vectors a = (3.0 m) i ˆ + (4.0 m) j ˆ and b = (5.0 m) i ˆ +(- 2.0 m) j ˆ , give a + b in (a) unit-vector notation and as (b) a magnitude and (c) an angle (relative to i ˆ ).
搜尋
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