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A truck travelling due to north at 20m s...

A truck travelling due to north at `20m s^(-1)` turns west and travels at the same speed. Find the change in its velocity.

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Verified by Experts

From (figure) `vec(v)_(1)=20hat(j)` and `vec(v)_(2)=-20hat(i)`.
`Deltavec(v)=vec(v)_(2)-vec(v)_(1)=-20(hat(i)+hat(j))`
`|Deltavec(v)=20sqrt(2)`
and dirction `theta^(-1)=45^(@)`,i.e.,S-W
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CENGAGE PHYSICS ENGLISH-VECTORS-Exercise 3.1
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