Question

C14B.1 A rubber ball with a mass m moving with a speed of 1.2 m/s in the +x direction collides with a ball with mass 2m at rest. If this one-dimensional collision is elastic, what are the speeds and directions of both balls afterward?!

Answer 1

2m M Rest Be fone Colison Afts Collixon V= 1.2 M/ afte Collisen 2 M after Colson V2eed of Veed of mass by Contchation of mamentum Manrnturn of pastiles a fts Collisan Momentum of pas tides befone Collisan 2m mv 2m(0) V122 1.2 $10 10

Coefficint of hestitution (e)= Velecity of sefasa tio Veluc ty of atfreach V-Vi e = V-C foh elastic Colien 2- V V2-V1 V2-V1=1-2 from equation V422tV2-1 = 1-2 12 3V2=a.Y Put in V 0.8 +2(0.31.2 V1 t1.6=1-2 -Ve gn means maves in -ve x-axi aftu (aliaen