COMEDK · Physics · 4. Motion In Two Dimensions
From the same point, two stones A and B are thrown simultaneously, A is thrown up vertically with a velocity of \(10\ ms^{-1}\) and B is thrown up with the same velocity at \(30^\circ\) with the horizontal. The separation between the balls at 2 s is
- A \(20\ \text{m}\)
- B \(10.5\ \text{m}\)
- C \(25\ \text{m}\)
- D \(22\ \text{m}\)
Answer & Solution
Correct Answer
(A) \(20\ \text{m}\)
Step-by-step Solution
Detailed explanation
Let the point of projection be the origin \((0,0)\). Position vector of stone A at time \(t\) is: \(\vec{r}_A = (10t - \dfrac{1}{2}gt^2)\hat{j}\) Position vector of stone B at time \(t\) is:…
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