Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
JerJason
Group Title
An internal explosion breaks an object initially at rest into two pieces, one of which has 1.6 times the mass of the other. If 5900J is released in the explosion, how much kinetic energy does each piece acquire?
 2 years ago
 2 years ago
JerJason Group Title
An internal explosion breaks an object initially at rest into two pieces, one of which has 1.6 times the mass of the other. If 5900J is released in the explosion, how much kinetic energy does each piece acquire?
 2 years ago
 2 years ago

This Question is Closed

JerJason Group TitleBest ResponseYou've already chosen the best response.0
I know that one of the pieces has to exert kinetic energy that is 1.6 greater than the other, and that this amount plus that amount should equal 5900J. I'm unsure on how to obtain this answer though, I could just plug in random values until I come up with the answer, but that wouldn't be the best approach...
 2 years ago

shubham Group TitleBest ResponseYou've already chosen the best response.0
Explosion is an internal phenomenon, forces involved are internal and hence, form actionreaction force pair. So, Forces on both the pieces ( A and B) are equal in magnitude, opposite in direction i.e. Fa = Fb [ eq.1] Here, you know the amount of energy released = 5900 J So, 1/2* Ma* Va^2 + 1/2*Mb*Vb^2 = 5900 [ 4 variables ] and you know relation b/w Ma and Mb [ Ma = 1.6*Mb] You can also find a relation b/w Va and Vb using eq.1 Hope you know how to proceed further !!
 2 years ago

salini Group TitleBest ResponseYou've already chosen the best response.0
first what energy does the bomb(with all parts intact )have?
 2 years ago

JerJason Group TitleBest ResponseYou've already chosen the best response.0
potetial energy, there is also no momentum on the bomb yet.
 2 years ago

salini Group TitleBest ResponseYou've already chosen the best response.0
yeah no momentum beautiful now as theree was only an INTERNAL explosion(force) momentum will be conserved? so initial momentum of system=final momentum of system?
 2 years ago

JerJason Group TitleBest ResponseYou've already chosen the best response.0
Yes the total system of the bomb would be conserved since adding each individual piece after collision would equal the same momentum.
 2 years ago

experimentX Group TitleBest ResponseYou've already chosen the best response.0
apply conservation of momentum the total momentum is zero. m1 v1 = m2 v2 and 1/2 m1 v1^2 + 1/2 m2 v2^2 = 5900 also m1 = 6 m2
 2 years ago

salini Group TitleBest ResponseYou've already chosen the best response.0
yeah can u do that? system is always BOMB as awhole
 2 years ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.