+91-87964 74404
FlagBACK
Question icon
Grade 11Discuss with colleagues and IITians

A small ball moves towards right with a velocity . It collides with thte wall and returns back and continues a to and fro motion. If the average speed for the first and to fro motion is (2/3) v , find the coefficient of restitution of impact (in 10^ – 1). Please reply soon

Profile image of muktesh singh
11 Years agoGrade 11
Answers icon

1 Answer

Profile image of Arun
6 Years ago
Time during to motion is t 
1
​ 
 = 
V
s
​ 
 
Time during fro motion is t 
2
​ 
 = 
eV
s
​ 
 
Total time is t=t 
1
​ 
 +t 
2
​ 
 
Total distance is 2s
So, average speed is  
t
2s
​ 
 = 
( 
V
s
​ 
 + 
eV
s
​ 
 )
2s
​ 
 = 
(1+e)
2eV
​ 
 = 
3
2V
​ 
 ⇒e=0.5

Other Related Questions on discuss with colleagues and iitians

question mark
Are core branches(Mechanical) in Top 3 NIT worth it ?
discuss with colleagues and iitians
1 Answer Available

Last Activity: 3 Years ago

question mark
My rank in JEE Advanced 2022 is 1871. Should I go for IIT Guwahati ECE or IIT Kanpur Mechanical and try for a branch change to CS or Electrical Engineering? Is changing your branch very difficult?
discuss with colleagues and iitians
1 Answer Available

Last Activity: 3 Years ago

question mark
Can i sacrifice board exams for jee mains as board exams are no where valueable as cuet and other will be seen for admission 
 
discuss with colleagues and iitians
1 Answer Available

Last Activity: 4 Years ago

question mark
Is a student studying in IGCSE syllabus eligible for taking IOQP or IOQJS?
discuss with colleagues and iitians
1 Answer Available

Last Activity: 4 Years ago

question mark
I have wasted my 11th? Is it still possible to get into my dream iit? Do i have to cover 11 th syllabus first? When and how can i finish it? 
discuss with colleagues and iitians
1 Answer Available

Last Activity: 4 Years ago