A) \[\frac{u\,\,\cos \,\,\alpha }{f}\]
B) \[\frac{u\,\,\sin \,\,\alpha }{f}\]
C) \[\frac{f\,\,\cos \,\,\alpha }{u}\]
D) \[u\,\,\sin \,\,\alpha \]
Correct Answer: A
Solution :
[a] We can consider the two velocities as \[{{\vec{v}}_{1}}=u\hat{i}\] and \[{{\vec{v}}_{2}}=(ft\,\,cos\,\,\alpha )\hat{i}+(ft\,\,sin\,\,\alpha )\hat{j}\]You need to login to perform this action.
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