A) 1 : 5
B) 5 : 1
C) 1 : 40
D) 40 : 1
Correct Answer: D
Solution :
Standard equation of projectile motion \[y=x\tan \theta -\frac{g{{x}^{2}}}{2{{u}^{2}}{{\cos }^{2}}\theta }\] Comparing with given equation \[A=\tan \theta \] and \[B=\frac{g}{2{{u}^{2}}{{\cos }^{2}}\theta }\] So \[\frac{A}{B}=\frac{\tan \theta \times 2{{u}^{2}}{{\cos }^{2}}\theta }{g}=40\] (As \[\theta =45{}^\circ ,\ u=20\,m/s,\ g=10\,m/{{s}^{2}}\])You need to login to perform this action.
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