Question
Question: A ball strikes a wall with a velocity u and an angle α to the wall and rebound at a velocity v and a...
A ball strikes a wall with a velocity u and an angle α to the wall and rebound at a velocity v and at an angle β to the wall. Then
A
usinα = vsinβ
B
u = v
C
ucosα = v sinβ
D
usinα = v cosβ
Answer
usinα = vsinβ
Explanation
Solution
The velocity along common tangent remains constant. usinα = v sinβ