How to Motivate Yourself in the Time of Depression

A man from the top of a 100 m high tower sees a car moving towards the tower at an angle of depression 30°. After some time, the angle of depression becomes 60°. What is the distance travelled by the car during this time ?

A man from the top of a 100 metres high tower sees a car moving towards the tower at an angle of depression of 30^@ . After some time, the angle of depression becomes 60^@ .The distance (in metres) travelled by the car during this time is

Motivation, in the process of learning,

How do tranquilisers control the feeling of depression?

With the help of an example explain how do transquilizers control the feeling of depression ?