A vertical post 15 ft high is broken at a certain height, and its upper part, not completely separated, meets the ground at an angle of `30^@`. Find the height at which the post is broken

A vertical post 15 m high is broken at a certain height and its upper part, not completely seperated, metres the ground at an angle of 30^(@) . Find the height at which the post is broken.

Some portion of a 20 meters long tree is broken by the wind and its top struck the ground at an angle of 30 ^@ .Find the height of the point where the tree is broken.

A vertical post of 126 dcm height was bent at some point above the ground and it just touched the ground making an angle of 30^(@) with the ground. Calculate at what height was the post bent and at what distance did it meet the ground from the foot of the post.

A piece of ice at 0^(@)C is dropped to the ground from some height. The piece of ice melts completely due to its impact with the ground. Find the height from which the piece was dropped considering that 60% of its energy is converted into heat. (J = 4.2 J cdot cal^(-1))

A telegraph post is bent at a point above the ground due to storm. Its top just meets the ground at a distance of 8sqrt3 metres from its foot and makes an angle of 30^@ . Calculate at what heigh the post is bent and what is the height of the post.

A body falling freely from a certain height travels half of that height in the last second of its motion. Find the height from which it stated to fall.

The shadow of a vertical tower on level of ground increased by 10m when the attitude of the sun change from 45^@ to 30^@ . Find the height of the lower.

The length of shadow of a tower standing on the ground is found to be 60 metres more when the Sun's angle of elevation changes from 45^@ to 30^@ . Find the height of the tower.

From an aeroplane vertically above a straight road the angles of depression of two consecutive mile stones on the road are observed to be 45^@ and 30^@ . Find the height of the aeroplane above the road.

The upper part of a lamp-post is broken by strom and the top touches the ground at an angle of 30^@ and at a distance of 8sqrt3 meter from the foot of the post. What was the height of the post.