A ball will project with a speed u at an angle of projection `30^@` has a range R.Is there any other value of angle of projection at which the range with same initial speed u is R?

Show that there are two angles of projections for a projectile to have same horizontal range.

The angle of projection at which the horixontal range and maximum heigth of projectile are equal is :

Keeping the angle of projection same, what is the effect on horizongal range of a projectile when its velocity is doubled?

How many directions of projection are possible for the same horizontal range?

At what angle ith the verticle should a projectile be projected so that its range is maximum?

A cricketer fielder can throw the cricket ball with a speed v_(0) . If he throw the ball while running with speed u at an angle theta to the horizontal,find the effective angle to the horizontal at which the ball is projected in air as seen by a spectator.

If u is the velocity of projection ,what is the value of maximum horizontal range?

Show that the horizontal range is maximum when angle of projection is 45^@ .