MCQ
The horizontal range is four times the maximum height attained by a projectile. The angle of projection is ......... $^o$
  • A
    ${90}$
  • B
    ${60}$
  • ${45}$
  • D
    ${30}$

Answer

Correct option: C.
${45}$
c
$ R = 4H\cot \theta ,$

if R = 4H then $\cot \theta = 1 \Rightarrow \theta = 45^\circ $

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