AP EAMCET · PHYSICS · Motion In Two Dimensions
A motor boat is moving in a river with velocity \(\overrightarrow{\mathrm{v}}=7 \hat{\mathrm{i}}+2 \hat{\mathrm{j}}-5 \hat{\mathrm{k}} \mathrm{ms}^{-1}\). If the flow of water offers resistive force \(\vec{F}=9 \hat{i}+3 \hat{j}-3 \hat{k} \quad N\), then the power of the boat is
- A \(13 \mathrm{~W}\)
- B \(69 \mathrm{~W}\)
- C \(12 \mathrm{~W}\)
- D \(84 \mathrm{~W}\)
Answer & Solution
Correct Answer
(D) \(84 \mathrm{~W}\)
Step-by-step Solution
Detailed explanation
Velocity of boat \(V=7 \hat{i}+2 \hat{j}-5 \hat{k} \mathrm{~m} / \mathrm{s}\)…
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