Consider the head-on collision between a water molecule, mass 18u and a nitrogen molecule mass 28u....

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Physics

Consider the head-on collision between a water molecule, mass18u and a nitrogen molecule mass 28u. Prior to the collision, thenitrogen moving to the right at +0.4390 km/s and the water moleculeis moving to the left at -0.7570 km/s. Immediately after thecollision, the velocity of the water molecule is v = 0.6990 km/s. Apositive sign indicates a molecule moving to the right and anegative sign indicates a molecule moving to the left. The atomicmass unit (u) is commonly used to indicate the mass of atoms andmolecules: 1u=1.66Ã—10^-27kg.

What is the velocity of the nitrogen molecule immediately after thecollision? (in m/s)
A: -0.3976 B: -0.4970 C: -0.6212 D: -0.7766 E: -0.9707 F: -1.2134 G: -1.5167 H: -1.8959
Tries 0/20

If the collsion described above is an elasticcollision, which of the following MUSTconserved?
I. Momentum
II. Kinetic Energy
A B C D
A I only
B Neither I nor II
C Both I and II
D II only

Answer & Explanation Solved by verified expert

3.6 Ratings (649 Votes)

In any kind of collision if we consider both the particles as asystem then the forces acting between them becomes the internalforcesAnd we can observe that there are no external forces on thesystemHence we know that momentum of the system is conserved Thatis initial momentum of the system is equal to See Answer

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