A projectile is fixed on a horizontal ground. Coefficient of restitution between the projectile and the ground is 'e'. If `a,b` and `c` be the ration of time of flight `[(T_(1))/(T_(2))]`, maximum height `[(H_(1))/(H_(2))]` and horizontal range `[(R_(1))/(R_(2))]` in first two collisions with the ground, then

Options

A. `a=(1)/(e )`
B. `b=(1)/(e^(2))`
C. `c=(1)/(e^(2))`
D. all of the above

Answer

A, B