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An object A is moving with 5 m/s an...

An object A is moving with 5 m/s and B is moving with 20 m/s in the direction . (positive x-axis )
find velocity of A with respect to B .

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(a) `vec(V)_(B) = 20hat(i) m//s , vec(V)_(A) = 5hat(i)m//s`,
`vec(V)_(B) - vec(V)_(B) = 15 hat(i) m//s`
(b) `vec(V)_(B) = 20 hat(i) m//s, vec(V)_(B) = 5hat(i) m//s`,
`vec(V)_(AB) = vec(V)_(A) - vec(V)_(B) = -15 hat(i) m//s`
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