An electron's position is given by r=(3ti+4t2j+2k) with t in seconds and r in meters. A)Determine the electron's velocity v(t) in unit vector notation. B)What is the magnitude of v(t) at t=2 s? C)What is the angle between v(t) and the unit vector ı ?

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A: A→ = 8 ×(cos45oi^ + Sin45oj^) A→ = 5.65i^ + 5.65j^B→ = -8i^

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A: Given:a→ = 7.0 i^ +2.6 j^ b→ = 5.4 i^ + 9.7 j^

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A: A→=2i+5j−6kB→=3j+3kR→=A→+B→=(2i+5j−6k)+(3j+3k)=2i+8j−3kNow

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A: north of west

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A: magnitude of a vector =(Ax 2 +Ay 2  )1/2

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A: Given value--- A = 105 units, 69.0° south of west. B=237 units, 31.0° south of east. 153 units,…

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