A ball strikes a wall with a velocity at an angle with the normal to the wall surface and rebounds from it at an angle with the surface. Then
|
a)
|
, if the wall is smooth
|
b)
|
If the wall is rough, coefficient of restitution 
|
c)
|
If the wall is rough, coefficient of restitution 
|
d)
|
None of the above
|
Question ID - 100545 | SaraNextGen Top Answer
A ball strikes a wall with a velocity at an angle with the normal to the wall surface and rebounds from it at an angle with the surface. Then
|
a)
|
, if the wall is smooth
|
b)
|
If the wall is rough, coefficient of restitution 
|
c)
|
If the wall is rough, coefficient of restitution 
|
d)
|
None of the above
|
1 Answer
127 votes
Answer Key / Explanation : (a,c) -
(a,c)
If wall is smooth 





If wall is rough, then 

From (i) and (ii), 
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