(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Two air track gliders of a mass 300 g and 200 g are moving towards each other in opposite directions with speeds of 50 cm/s and 100cm/s respectively. Take the direction of the more massive glider as positive.

A.) determine the velocity of each glider after the collision if the collision is elastic.

b.) The most inelastic collision would occur if the two gliders stuck together on impact. If this was the case, find the velocity of the pair after the collision, and the kinetic energy in standard units of "J".

2. Relevant equations

m1v1i +m2v2i = m1v1f + m2v2f

3. The attempt at a solution

a.) in order to find the unknown velocites you need to know at least one of the rebound velocities do you not?

0.3(0.50) + 0.2(-1.00) = 0.3v1f + 0.2v2f

b.)0.3(0.50) + 0.2(-1.00) = 0.5vf

vf = (0.15-0.2)/0.5

= -1.0 m/s

KE = 1/2mv^2

= 1/2(0.5)(-1.0)^2

= 0.25 J

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Not enough information in this momentum question?

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