9. Vectors

If vector $a\text{⃗}=20\hat{ı}$ and vector $b⃗=50ĵ$ calculate $a ⃗-b ⃗$ using $î$ and $ĵ$ notation.

Find the unit vector in the direction of $a\text{⃗}=6\hat{ı}+3\hat{ȷ}$.

If vector $v\text{⃗}=$$11ĵ$ and vector $10î-25ĵ$ calculate $v⃗+\(\frac\)15u⃗$ using $î$ & $ĵ$ notation.

Find the unit vector in the direction of $v\text{⃗}=12\hat{ı}-35\hat{ȷ}$.

If vector $v\text{⃗}=12\hat{ı}-2\hat{ȷ}$ and vector $u⃗=5î+20ĵ$ calculate $2v ⃗-2u ⃗$ using $î$ and $ĵ$ notation.