Question

In the previous problem, the distance between the balls when their velocity vectors are perpendicular is
A. `(2(v_+ v_(2))sqrt(v_(1)v_(2)))/(g)`
B. `(v_(1) + v_(2)sqrt(v_(1)v_(2)))/(g)`
C. `(v_(1) + v_(2)sqrt(v_(1)v_(2)))/(g)`
D. `(v_(1) + v_(2)sqrt(v_(1)v_(2)))/(2 g)`

Answer 1

Correct Answer - C
`x_(1) = v_(1) t, x_(2) = v_(2) t`
Distance between balls `d = (v_(1) + v_(2))t`
`= ((v_(1) + v_(2))sqrt(v_(1)v_(2)))/(g)`