MCQ
The maximum horizontal range of a projectile is $400\;m$.The maximum height atteined by it?
- ✓$100$
- B$200$
- C$400$
- D$800$
✓
Answer
Correct option: A.
$100$
a
${R_{\max }} = 400\,m$ [$\theta = 45^\circ $]
${R_{\max }} = 400\,m$ [$\theta = 45^\circ $]
$R = 4H\cot \theta $
$\Rightarrow 400 = 4H\cot 45^\circ $
$\Rightarrow \,H = 100\,m$
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