A ball is projected at an angle `60^(@)` with the horizontal with speed 30 m/s. What will be the speed of the ball when it makes an angle `45^(@)` with the horizontal ?

A ball is projected at an angle of 30^(@) above with the horizontal from the top of a tower and strikes the ground in 5s at an angle of 45^(@) with the horizontal. Find the height of the tower and the speed with which it was projected.

A ball is projected at an angle of 30^(@) above with the horizontal from the top of a tower and strikes the ground in 5s at an angle of 45^(@) with the horizontal. Find the height of the tower and the speed with which it was projected.

A ball is projected at an angle of 30^(@) above with the horizontal from the top of a tower and strikes the ground in 5s at an angle of 45^(@) with the horizontal. Find the height of the tower and the speed with which it was projected.

A ball is projected at an angle of 30^(@) above with the horizontal from the top of a tower ans strikes the ground in 5sec at angle of 45^(@) with the horizontal. Find the hieght of the lower and the speede with which it was projected.

A particle is projected at an angle of 60^(@) above the horizontal with a speed of 10m//s . After some time the direction of its velocity makes an angle of 30^(@) above the horizontal. The speed of the particle at this instant is s

A particle is projected at an angle of 60^(@) above the horizontal with a speed of 10m//s . After some time the direction of its velocity makes an angle of 30^(@) above the horizontal. The speed of the particle at this instant is

A particle is projected with velocity 50 m/s at an angle 60^(@) with the horizontal from the ground. The time after which its velocity will make an angle 45^(@) with the horizontal is

A particle is projected with velocity 50 m/s at an angle 60^(@) with the horizontal from the ground. The time after which its velocity will make an angle 45^(@) with the horizontal is