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anonymous
 5 years ago
An object with mass M moving North with
speed V strikes an identical object with mass M
moving East with speed V. Assuming a perfectly
inelastic collision, what is the speed of either
objects after collision
what i did:
mv+mv/ 2m = v
but that's wrong... so i dont know what to do
anonymous
 5 years ago
An object with mass M moving North with speed V strikes an identical object with mass M moving East with speed V. Assuming a perfectly inelastic collision, what is the speed of either objects after collision what i did: mv+mv/ 2m = v but that's wrong... so i dont know what to do

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0is the speed root of 2M?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0dw:1327070380181:dwin this case only momentum conservation can be applied as kinectic energy is not conserved

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0that gives the initial momentum

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0dw:1327070682895:dwfinal momentum=M(vel+vel) as vel of both are same after collision

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0how come KE isnt conserved?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0because inelastic collision involves lose of mechanical energy(k.e or p.e) it may be converted to some other form of energy like heat

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ohhhh, but in elastic collision, energy is conserved?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0remember ENERGY IS ALWAYS SAME ONLY TRANSFERRED FRM ONE FORM TO ANOTHER

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0okay, got it, thanks! how did you get m(v+v) ?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i thought momentum conservation was m1v1 + m2v2 = m1v1f + m2v2f

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ya that is wat i did here

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0initial momentum=final momentum

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0how did you get v sqrt 2?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0NEVERMIND!!!! i get it, thanks sooo much again, you seriously helped a lot, especially since my final is in 1 hour...

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0how do you know when momentum is conserved?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0when no external force acts here and in all collisions there is no external force in the system just transfer of enegy

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so all collisions have its momentum conserved? even with a block attached to a spring and another block collides and sticks to it?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yes there it is plastic collision as the block sticks to the other just look for initial and final cases after collision ask urself is there only the initial force thta was given acting? thats it

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0what does the answer to the question mean?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0when a body starts to move then it hits some other body,u just considert whether there is any external force acting on these bodies other than the initial force that was given for those bodies to move....

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0does air resistance count as an external force? last thing, i swear! how do you know when to use momentum conservation and energy and which to use first?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yes air resistance is an external force

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0for elastic collisions momentum and energy conserved for inelastic only momentum is conserved

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0okay, i think i got it now. thank you so much again! i really appreciate it!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0no problem ALL THE BEST!
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