A teenager was riding a hoverboard with a velocity of 0.90 meters per second before heading to the store 91 meters away with a constant acceleration of 0.15 m/s2. What was the final
velocity of the teenager on the hoverboard?

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.

the kind of relationship between atmospheric  density and altitude is inverse relationship. this means a surge in either will cut the other factor. density is mass per unit volume, it is hard to compute with only altitude 1,291 kilometers given. also, we could also use temperature and pressure to resolve density but they are not delivered.