Question

What is velocity?
Define:-
1.Air
2.Water
3.Soil

How we conserve soil erosion?



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Answer 1

The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of an object's speed and direction of motion (e.g. 60 km/h to the north).

define 1.air: the invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen.

2.water :a colourless, transparent, odourless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

3.soil:the upper layer of earth in which plants grow, a black or dark brown material typically consisting of a mixture of organic remains, clay, and rock particles.