Two balls are thrown simultaneously at two different angles so that both have equal ranges. If `H_(1)` and `H_(2)` be the maximum heights attained in two cases. Then the summation `H_(1)+H_(2)` is equal to

In the previous problem, if H_(1) and H_(2) are the maximum heights in the two cases, then

Two stones are thrown with same speed u at different angles from ground n air if both stones have same range and height attained by them are h_(1) and h_(2) , then h_(1) + h_(2) is equal to

Two stones are thrown with same speed u at different angles from ground n air if both stones have same range and height attained by them are h_(1) and h_(2) , then h_(1) + h_(2) is equal to

Two balls are thrown with the same speed from a point O at the same time so that their horizontal ranges are same. If the difference of the maximum height attained by them is equal to half of the sum of the maximum heights, then the angles of projection for the balls are

R is the rangle on a horizontal planne for a shot with the same velocity at two differen angles of projection. If h and h' be the greatest heights attained correspoinding to these angles of projection, what is R^2 equal to ?

A projectile can have same range from two angles of projection with same initial speed . If h_1 and h_2 be the maximum heights, then the relation between range and two heights is

Two particles projected form the same point with same speed u at angles of projection alpha and beta strike the horizontal ground at the same point. If h_1 and h_2 are the maximum heights attained by the projectile, R is the range for both and t_1 and t_2 are their times of flights, respectively, then

Two particles projected form the same point with same speed u at angles of projection alpha and beta strike the horizontal ground at the same point. If h_1 and h_2 are the maximum heights attained by the projectile, R is the range for both and t_1 and t_2 are their times of flights, respectively, then incorrect option is :