A man 2m tall, walks at the rate of `1 2/3m//s e c` towards a street light which is `5 1/3` m above the ground. At what rate is tip of his shadow moving? At what rate is the length of the shadow changing when he is `3 1/(13)m` from the base of the light?

A man of height 1.6m, walks at a rate of 30m/sec away from a lamp which is 4m in height. How fast the shadow of man is lengthening.

A man of height 2 metres walks at a uniform speed of 5 km/h away from a lamp post which is 6 metres high. Find the rate at which the length of his shadow increases.

Ravi is 1.82m tall. He wants to find the height of a tree in his backyard. From the tree’s base he walked 12.20 m. along the tree’s shadow to a position where the end of his shadow exactly overlaps the end of the tree’s shadow. He is now 6.10m from the end of the shadow. How tall is the tree ?

A light is placed on the groung at a distance of 30 ft from a house. A man 6 ft tall walks from the light towards the house at the rate of 5 ft/s find the rate at which his shadow on the wall is shortening when he is 15 ft from the wall.

A man 6 ft tall walks away from the foot of a lamp-post 15 ft high at the rate of 3 mi/h how fast does the tip of his shadow move?

A 5 ft long man walks away from the foot of a 12 1/2 ft high lamp post at the rate of 3 mile/h. Find the rate at which his shadow is increasing.

A tree grows at a rate of 0.5 m/yr . What will be the height of a board fixed at 1.5 m above the base, five years ago

A man 6 ft tall walks away from the foot of a lamp-post 15 ft high at the rate of 3 mi/h How fast does his shadow lengthen?

The rate of a reaction is 1.2xx10^-3 L mol^-1s^-1 , What is the order of the reaction?

A man is moving away from a tower 41.6 m high at the rate of 2 m/sec. Find the rate at which the angle of elevation of the top of tower is changing, when he is at a distance of 30m from the foot of the tower. Assume that the eye level of the man is 1.6m from the ground.