The discussion revolves around calculating the ratio of masses of two frictionless discs that are propelled apart by an explosion, with given velocities of 9.0 m/s and 5.0 m/s. Participants are exploring the relationship between mass and velocity in the context of momentum conservation.
The discussion is ongoing, with participants examining different interpretations of the problem and questioning the accuracy of the provided answer key. Some guidance on using momentum equations has been shared, but no consensus has been reached regarding the correct mass ratio.
There is uncertainty about the correctness of the answer key, and participants are considering the implications of potential mistakes in their own reasoning or in the key itself.
ColdRifle said:m1u1=m2u2 Since we want the ratio of m1 and m2 we make m2=m1*k(a constant)
m1(9m/s)=m1*k*5m/s
k=9/5 So the ratio of the two masses is that the 1st has the 5/9 of the seconds mass