A person observes a bird on a tree 39.6 m high and at a distance of 59.2 m. With what velocity the person should throw an arrow at an angle of `45^(@)` so that it may hit the bird ?

A person sees an object on a tree at a heitht of 40 m and at a distance of 60 m . Whith what velocity he showld throw an arrow at an angle of 45^@ so that it may hit the object ? Take g= 10 ms^(2) .

When an observer at a distance of 12 m from a tree looks at the top of the tree, the angle of elevation is 60^(@) . What is the height of the tree?

A person throws a bottle into a dustbin at the same height as he is 2m away at an angle of 45^(@) .The velocity of thrown is

A ball is thrown vertically down with velocity of 5m/s. With what velocity should another ball be thrown down after 2 seconds so that it can hit the 1 st ball in 2 seconds

A person is standing at a distance of 80m from the church looking at its top. The angle of elevation is 45^(@) . The height of the church is.

When observer at a distance of 12m from a tree looks at the top of the tree, the angle of elevation is 60^(@) . What is the height of the tree? (sqrt(3)=1.73)

From the top of a building 80 m high, a ball is thrown horizontally which hits the ground at a distance.The line joining the top of the building to the point where it hits the ground makes an angle of 45^(@) with the ground. Initial velocity of projection of the ball is (g=10 m//s^(2))

From the the top of a tower 19.6 m high, a ball is thrown horizontally. If the line joining the point of projection to the point where it hits the ground makes an angle of 45^(@) with the horizontal, then the initial velocity of the ball is:-