Solving Firework Explosion Homework Problem

  • Thread starter Thread starter cstout
  • Start date Start date
Click For Summary
SUMMARY

The firework explosion problem involves a firecracker that explodes into three equal mass pieces at its peak height. Two pieces move at 130 m/s at right angles to each other, while the third piece's velocity must be determined using the conservation of momentum principle. The initial momentum is zero, and the final momentum must also equal zero, leading to the conclusion that the third piece moves at 130 m/s in a direction that balances the momentum of the other two pieces.

PREREQUISITES
  • Understanding of conservation of momentum
  • Basic knowledge of vector components
  • Familiarity with kinematics in physics
  • Ability to solve equations involving mass and velocity
NEXT STEPS
  • Study vector addition and its application in momentum problems
  • Learn about the conservation of momentum in two-dimensional collisions
  • Explore examples of projectile motion and explosion problems
  • Review the principles of kinematics and dynamics in physics
USEFUL FOR

Students studying physics, particularly those focusing on mechanics and momentum, as well as educators looking for illustrative examples of conservation laws in action.

cstout
Messages
37
Reaction score
0

Homework Statement



A firecracker is tossed straight up into the air. It explodes into three pieces of equal mass just as it reaches the highest point. Two pieces move off at 130 m/s at right angles to each other. How fast is the third piece moving?

Homework Equations





The Attempt at a Solution



I'm not sure what to do with this problem, I thought the third piece would be the same as the other two at 130m/s but this is not the case. What is there to do?
 
Physics news on Phys.org
Conservation of momentum

Initially the momentum is zero(because it was at the highest point and wasn't moving)

but now you have three pieces, so the x and y components of the three pieces' momentums(I hate saying momenta)must cancel so that Pi=Pf
 
so does Pi = 260(mass) and Pf = mass(velocity) so the masses cancel and the velocity is 260?
 

Similar threads

  • · Replies 18 ·
Replies
18
Views
3K
Replies
8
Views
2K
  • · Replies 4 ·
Replies
4
Views
952
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 4 ·
Replies
4
Views
8K
Replies
11
Views
3K
  • · Replies 3 ·
Replies
3
Views
5K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 19 ·
Replies
19
Views
7K
  • · Replies 10 ·
Replies
10
Views
4K