Question
Question: A body strikes a wall at an angle θ and velocity u to rebound at angle angle β and velocity v....
A body strikes a wall at an angle θ and velocity u to rebound at angle angle β and velocity v.
A
tanβ = ecotθ
B
cotβ = e cotθ
C
tanβ = etanθ
D
cotβ = e tanθ
Answer
tanβ = etanθ
Explanation
Solution
Applying Newtons experimental law
vsinβ = u sinθ . . . (1)
Along common normal
vcos β = eu cosθ . . . (2)
From (1) at (2)
tanβ = etanθ