An engineer is designing a runway for an airport. Of the planes that will use this airport, the lowest acceleration rate is likely to be 4 m/s^2. The
takeoff speed of this plane will be 80 m/s. Assuming this is the minimum
acceleration, what is the minimum allowed length for the runway? (vf^2 =
vi^2 + 2a(df-di)) *

704m

Explanation:

Given, initial velocity, u=0m/s and final velocity v=65m/s

Acceleration a=3m/s 2

If d be the allowed length for the runway.

Using formula v*2 −u*2 =2aS

(65)*2−0*2 =2(3)d

⟹ d=65*2 /6=704.16∼704m

emily ruth's annual premium is $1058.50

step-by-step explanation:

emily ruth is a female of 27 years age purchasing 20 year endowment insurance with face value $25000.

from the given table,

for females, the age of a male 3 years younger should be used.

so, we have to check for 24 year male for 20 year endowment.

it is 42.34 for every $1000 face value.

for a face value of $25000,

it is 25 * 42.34 = $1058.50

∴ emily ruth's annual premium is $1058.50