A runner covers the last straight stretch of a race in 3 s. During that time, he speeds up from 5 m/s to 11 m/s. What is the runner's acceleration in this part of the race? ​

From first Newton's equation of motion:

Substitute the variables:

Acceleration is 2 ms-²

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet

step-by-step explanation: 4 cause 2+2=4