Momentum and Conservation of Momentum Problem

  • #1

Homework Statement


hello. i tried to solve for the problem, which was quite difficult for me and i'm not sure whether i approached it correctly, so if someone will help me figure it out thank you!

the problem:
1. a 2 kg firework is shot vertically, at v=50 m/s
a. what is the velocity and momentum of the firework as it reaches a height of 50 m'?
b. in the height of 50 m' the firework explodes into two equal particles. particle 1 moves horizontally in 30 m/s.
what's the horizontal velocity of particle 2 after the explosion? what's the velocity of particle 2 and it's direction.
c. what's the kinetic energy of particle 2 when it reaches the floor?
upload_2015-8-25_19-0-1.png

this is my answer, explaining all the steps i took:
upload_2015-8-25_20-24-32.png

Homework Equations



3. The Attempt at a Solution
View attachment 87789[/B]
 

Answers and Replies

  • #2
DEvens
Education Advisor
Gold Member
1,203
452
It's kind of hard to read your hand writing. So I didn't check it in detail.
 
  • #3
It's kind of hard to read your hand writing. So I didn't check it in detail.
thank you, sorry.. i tried to make it as organized as i could.. the thing that was hard for me the most was to find what's the horizontal velocity and velocity for the second particle.
 

Related Threads on Momentum and Conservation of Momentum Problem

Replies
11
Views
34K
Replies
0
Views
3K
Replies
1
Views
2K
Replies
4
Views
5K
Replies
3
Views
2K
Replies
1
Views
841
Replies
5
Views
1K
Replies
7
Views
700
Replies
5
Views
2K
Replies
9
Views
5K
Top