Asked by Nancy
A fully plane has a constant acceleration while moving down a runaway. the plane requires .7 mile of runaway and a speed of 160 miles per hour in order to lift off. what is the planes accelearation?
i need the formula cause the one i have doesnt work cause i need time
i need the formula cause the one i have doesnt work cause i need time
Answers
Answered by
Reiny
vel = at where t is in hrs, and a is in miles/hrs^2
then s = (1/2)at^2 where s is the distance in miles
when v = 160
at=160
t = 160/a
when s= .7
(1/2)a(160/a)^2 = .7
a = 18285.7 miles/hrs^2
so what time is liftoff?
160 = 18285t
t = .00875 hrs or 31.5 seconds
check:
at t= 0,
v = 0
s = 0
when t = .00875
v = 18285.7(.00875) = 160
s = (1/2)(18285.7)(.00875)^2 = .699999
then s = (1/2)at^2 where s is the distance in miles
when v = 160
at=160
t = 160/a
when s= .7
(1/2)a(160/a)^2 = .7
a = 18285.7 miles/hrs^2
so what time is liftoff?
160 = 18285t
t = .00875 hrs or 31.5 seconds
check:
at t= 0,
v = 0
s = 0
when t = .00875
v = 18285.7(.00875) = 160
s = (1/2)(18285.7)(.00875)^2 = .699999
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.