a- the momentum of each object
b- the kinetic energy of each object
c- the total momentum of all the objects
d- the total kinetic energy of all the objects
2007-01-31 02:48:47 · 4 answers · asked by AC 1 in Science & Mathematics ➔ Physics
Only c
Th
2007-01-31 05:27:00 · answer #1 · answered by Thermo 6 · 0⤊ 0⤋
For all perfectly elastic collisions, both c) and d) are true, total momentum and energy is conserved. However, in the case of inelastic collisions, then only c) is true, because some of kinetic energy may be converted into heat in the bodies. What's truly constant is the motion of the center of mass of the system, even if things disintegrated upon impact, so, really, there should be a e) the motion of center of mass of all objects. Oh well.
2007-01-31 11:15:03 · answer #2 · answered by Scythian1950 7 · 0⤊ 0⤋
c
By the principle of the conservation of momentum in colliding bodies, the total momentum before collision = total momentum after collision.
Remember that momentum of a moving body is a vector quantity. Hence the directions of the velocities of the colliding bodies must be taken into account.
2007-01-31 11:08:15 · answer #3 · answered by pete 2 · 0⤊ 0⤋
total momentum of all the object
but kinetic energy is not conserved in all situations
2007-01-31 10:53:25 · answer #4 · answered by tarundeep300 3 · 0⤊ 0⤋