Two thin wood screens A and B are separated by 200m. A bullet travelling horizontally at a speed of 600 ms−1 hits the screen A, penetrates through it and finally emerges out from B making holes in A and B. If the resistance of air and wood are negligible, the difference of heights of the holes in A and B is

Two thin wood screens A and B are separated by 200m. A bullet travelling horizontally at a speed of $600 {ms}^{- 1}$ hits the screen A, penetrates through it and finally emerges out from B making holes in A and B. If the resistance of air and wood are negligible, the difference of heights of the holes in A and B is

A
5 m
B
$\frac{49}{90} m$
C
$\frac{7}{\sqrt{90}} m$
D
Zero

Solution:

$R = u \sqrt{\frac{2 (h_{1} - h_{2})}{g}}$

$Δ h = h_{1} - h_{2}$

$200 = 600 \sqrt{\frac{2 Δ h}{9.8}}$

$1 = 3 \sqrt{\frac{2 Δ h}{9.8}}$

$1 = 9 (\frac{2 Δ h}{9.8})$

$\frac{4.9}{9} = Δ h$

$Δ h = \frac{49}{90} m$

Related content

Top 55 Quotes on Virat Kohli by Fans That Show Pure Admiration

NEET 2025 Cut Off is Expected, Check Category Wise Qualifying Marks for MBBS and BDS

National Anti-Terrorism Day 2025, Theme, History and Observance in India

World Telecommunication and Information Society Day 2025 (May 17th)

CBSE Worksheets for Class 12 – All Subjects Free PDF Download with Solutions

CBSE Class 11 English Worksheet Chapter 2 – A Photograph

CBSE Class 7 Perimeter And Area Worksheets With Answers

CBSE Class 11 English Worksheet Chapter 1 The Portrait of a Lady

Wastewater Story Class 7 MCQ With Answers

MCQ Questions for Class 7 Maths Chapter 5 Lines and Angles