A9.8 kg firework is launched straight up and at its maximum height 32 m it explodes into three parts. part a (0.5 kg) moves straight down and lands 0.27 seconds after the explosion. part b (0.5 kg) moves horizontally to the right and lands 6.5 meters from part a. part c moves to the left at some angle. how far from part a does part c land (no direction needed)?

The part c land 0.48m apart from the part a.

Explanation:

This can be solve using conservation of linear momentum. The explosion can be considered as an explosive collision, in which the internal forces are far stronger than the external ones. therefore we can consider the external forces as insignificant. In this case, the linear momentum before and after the explosion is the same. Therefore:

The final speed of the firework was 0m/s (maximum height), therefore its momentum P was null before the explosion. This means:

The total mass of the firework was 9.8kg, therefore the mass of part c is:

mc=Mtot-ma-mb=8.8kg

Now we have to calculate the initial speed of part a and part b. For both, we can use Vertical Projectile Motion equations:

For A:

For B:

Using the conservation of linear momentum, we calculate the speed of C:

Using now Vertical Projectile Motion for part C:

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:

connect the batteries in series and hope