Question

The figure below show three masses m₁=1.6 kg, m₂=3.0 kg, and m₃=4.6 kg which undergo two successive collisions. The first collision between m₁, which has an initial velocity v=6.9 m/s, and m₂ (which is initially at rest) is completely inelastic. The second collision between the combined mass m₁+m₂ and m₃ (which is initially at rest) is elastic. What is the velocity of m₃ after the second collision?

V 1 2 3

Answer 1

Thoree mans en mi 1.61€g velocity of the combined man (mama) atten est collision m2 = 3kg my a 4.6 kg Fm 1st collision, from momentum conservation miv +mex0 =(mitm) v, ME 1.6X6.9 +0= (106+3) ů Vi = 2.4 m/s Velocity of ma aften second collisin 2 (mitma) V2 Vi mi+m₂+ m₂ 2x6.6+3) X 2.4 (1-6+3+ 4.6) 2x 6.6 x 2.4. 9.2 V2 =2.4 m/s CScanned with CamScanner