Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
A girl of mass 50 kg jumps out of a rowing boat of mass 300 kg on to the bank, with a horizontal velocity of 3 m/s. With what velocity does the boat begin to move backwards?
Here given, mass of the boat $m_b=300\ kg$
Velocity of boat $v_b=?$
Mass of girl $m_g=50\ kg$
Velocity of girl $v_g=3\ m/s$
According to the law of conservation of momentum:
$m_bv_b=m_gv_g$
Or $v_b=\frac{150}{300}$
Or $v_b=0.5\ m/s$
Therefore, the boat begins to move backward with a velocity of $0.5\ m/s$.
Updated on: 10-Oct-2022
42 Views
Advertisements