COMEDK · Physics · 5. Laws of Motion
A body of mass \(1 \mathrm{~kg}\) starting from origin with initial velocity of \(3 \hat{\mathbf{i}}+4 \hat{\mathbf{j}} \mathrm{ms}^{-1}\). If a constant force of \(2 \hat{\mathbf{i}}-3 \hat{\mathfrak{j}}\) acts on it, find the coordinate of point it reaches in \(3 \mathrm{~s}\).
- A \((18,-1.5)\)
- B \((9,1.5)\)
- C \((18,1.5)\)
- D \((9,-1.5)\)
Answer & Solution
Correct Answer
(A) \((18,-1.5)\)
Step-by-step Solution
Detailed explanation
Given, initial velocity, \(u=3 \hat{\mathrm{i}}+4 \hat{\hat{\mathrm{s}}}\) Force, \(F=2 \hat{\mathbf{i}}-3 \hat{\mathbf{j}}\) Initial velocity along \(X\)-axis and \(Y_{\text {-axis }}\) are \(u_{x}=3 \mathrm{~ms}^{-1}\) and \(u_{y}=4 \mathrm{~ms}^{-1}\), respectively.…
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