- 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 car is travelling along the road at $8\ ms^{-1}$. It accelerates at $1\ ms^{-2}$ for a distance of $18\ m$. How fast is it then travelling ?
Here given, initial velocity $u=8\ ms^{-1}$
Acceleration $a=1\ ms^{-2}$
Distance $s=18\ m$
Let the final velocity be $v$.
On using the equation of motion $v^2=u^2+2as$
$v^2=8^2+2\times1\times18$
Or $v^2=64+36$
Or $v^2=100$
Or $v=\sqrt{100}$
Or $v=10\ ms^{-1}$
Thus, the car is traveling at the speed of $10\ ms^{-1}$.
Advertisements