Stating the truth or giving advice.
Answer:
Demonstrative pronouns are usually used to describe animals, places, or things, however they can be used to describe people when the person is identified, i.e., This sounds like Mary singing. Do not confuse demonstrative adjectives with demonstrative pronouns.
Explanation:
Well, I can't do it for you since the teacher will tell (trust me this has happened to me) that it's not your work but I can revise it and make sure it is a healthy short story.
If the jet plane is taking off, we know that initially the plane isn't moving (initial speed is zero, Vo=0m/s), the final speed (the one the plane needs to takeoff is 75m/s (Vf=75m/s), we need to verify if accelerating at a rate of 1.3m/s^2, the plane can reach the takeoff speed in a distance of 2.5km (the length of the runway). To do that we calculate the distance that will take to reach that speed, like the following:
this is the formula we are using, where "a" is the acceleration and "d" is the distance we are going to calculate.
d=2146.63m=2.146km.
The plane needs 2.146km to reach the takeoff speed, and the runway has 2.5km, so the plane will be able to use the runway safety.