The driver of a car, which is initially at rest at the top a of the grade, releases the brakes and coasts down the grade with an acceleration in feet per second squared given by a = 3.22-0.004v2 , where v is the velocity in feet per second. determine the velocity vb at the bottom b of the grade.

28.3 ft/s

Explanation:

We are given that

Initial velocity of a car=

Acceleration of the car=

We have to find the velocity at the bottom of the grade.

Distance covered by car=600 ft

We know that

Acceleration=a=

Taking integration on both side and taking limit of s from 0 to 600 and limit of v from 0 to

Using substitution method  and

Hence, the velocity at the bottom of the grade=28.3 ft/s

nec chapter 5 contains

c. information on special occupancy areas

nec chapter 6 covers

a. special equipment

which of the following rules contain the words shall or shall not and must be adhered to?

b. mandatory rules

which of the following rules identify actions that are allowed but not required and typically cover options or alternative methods?

c. optional rules

which of the following serves as the introduction to the nec and provides an overview of the book?

a. nec article 90

organizations that test products for safety are

c. nrtls

the nec is published by the

a national fire protection association

the nec is divided into

b. 9 chapters

the nec provides informative annexes for

c. informational materials and examples

two terms from nec article 100 that trainees should become familiar with are

b. labeled and listed

explanation: