Differentiate between velocity and acceleration

Acceleration is increasing or decreasing speed or changing direction, whereas velocity is how much distance you cover in a given amount of time.

Explanation:

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answer: 31, 5556. 952 seconds

in most common fires, oxygen is needed for an oxidation reaction to takes place. the combination of oxygen with any element as fuel can create fire and combustion will occur especially if wood, light materials and other combustible things are combine with oxygen.