NTA Abhyas 2020
- Exam
- NTA Abhyas
- Year
- 2020
- Subject
- Physics
- Chapter
- Motion in One Dimension
NTA Abhyas 2020 · Physics · Motion in One Dimension
A rifle with a muzzle velocity of 100ms^ - 1 shoots a bullet at a...
A rifle with a muzzle velocity of shoots a bullet at a small target away in the same horizontal line. How high above the target must the gun be aimed so that the bullet will hit the target?
Options
- A
- B
- C
- D
Correct answer
A.
Step-by-step solution
3 0 = \dfrac{u^{2} \text{\sin 2} \theta}{\text{g}} ⇒ 3 0 \times 1 0 = 1 0 {0}^{2} \text\sin 2 \theta
\text{\sin 2} \theta = 0 \text{.} 0 3 ⇒ 2 \theta = 0 \text{.} 0 3
\theta = 0 \text{.} 0 1 5 ⇒ \text\tan \theta = 0 \text{.} 0 1 5
\text{\sin 2} \theta = 0 \text{.} 0 3 ⇒ 2 \theta = 0 \text{.} 0 3
\theta = 0 \text{.} 0 1 5 ⇒ \text\tan \theta = 0 \text{.} 0 1 5