What are the two angles of projection of a projectile with velocity `30 m s^-1`, so that the horizontal range is 45 m.Take `g=10 m s^-2`.

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

If the angle of projection fo a projectile is doubled ,will the horizontal range become double ,keeping its velocity constant?

A ball is projected horizontally with a velocity of 4 ms^-1 .What will be its velocity after 0.7 sec (g=10 m s^-2) ?

A ball is thrown upwards from the top of a tower 40 m high with a velocity of 10 m/s. Find the time when it strikes the ground. Take g=10 m//s^2.

A bullet is fired at an anlge 30^@ in horizontal with velocity 300 m s^(-1) .Calculate its time of flight,horizontal rang enad the height achieved by it

A body P of mass m is thrown with velocity u at an angle 30^@ to the horizontal and another body Q is of teh same mass be projected with velocity u at an angle 60^@ to the horizontal .Find the ratio of the horizonta range nd maximum heights of P and Q.

A ball is droped from a 256 m high eower and at the same time another ball is projected vertical upward with velocity 32 m s^-1 in line with the first ball. Find when and where the two balls will meet each other. (g= 10 m s^-2)