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Question
A truck travelling due north at 20 m/s turns west and travels at the same speed. The change in its velocity be
A truck travelling due north at 20 m/s turns west and travels at the same speed. The change in its velocity be
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Solution
The correct option is D 20√2 m/s S−W
From figure
→v1=20^j and →v2=−20^i
Δ→v=→v2−→v1=−20(^i+^j)
|Δ→v|=20√2 and direction θ=tan−1(1)=45∘ i.e., S-W.
From figure
→v1=20^j and →v2=−20^i
Δ→v=→v2−→v1=−20(^i+^j)
|Δ→v|=20√2 and direction θ=tan−1(1)=45∘ i.e., S-W.
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