Answer:

Explanation:
Given that the airplane starts from the rest (this is initial velocity equals to zero) and accelerates at a constant rate, position can be described like this:
where x is the position, t is the time a is the acceleration and
is initial velocity. In this way acceleration can be found.
.
Now we are able to found velocity at any time with the formula: 
Displacement will be 15 too because
It falls from 0 till 15 meters
Answer:
there yah go that's the answer
Answer:
primary source
Explanation:
the explanation is in the image above
brainliest please