Write one paragraph to explain what circuler motion is?

When a body moves in a circle with constant speed , it is said to be in uniform circular motion .

Explanation:

When an object moves in a circular path , its direction changes at each point .This change in direction result in change of velocity (velocity is vector quantity which changes if direction of the object change) .However speed do not change (it is scalar quantity , not affected by Direction)The Change in velocity produce acceleration ( a = v - u)Hence The object always produce acceleration in uniform circular motion .So, Some force (centripetal force) is needed to keep the object in circular motion.

The phase where ice changes directly to gas is called sublimation 

Try adding 700% because of the x in y