What vertical distance δy does a free-falling particle travel from the moment it starts to the moment it reaches a speed of 7.9 m/s if it starts from rest? work out your solution using one of the equations for vertical motion with constant acceleration, specifically, v2f=v2i+2aδy, where vi and vf are the particle’s initial and final speeds, respectively, and a is the particle’s acceleration.

3.2 m

Explanation:

The equation to use to solve this problem is:

where

is the final velocity

is the initial velocity

a is the acceleration

is the distance covered

For the particle in free-fall in this problem, we have

(it starts from rest)

(acceleration due to gravity)

By re-arranging the equation, we can find the distance travelled:

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: