Question

pls tell me the reason.........

Answer 1

because momentum(p)=2×mass(m)×kinetic energy(k)
so,k1÷k2=m2÷m1
k1:k2=2:3
then m1:m2=3:2

Answer 2

because momentum(p)=2×mass(m)×kinetic energy(k)

so,k1÷k2=m2÷m1

k1:k2=2:3

then m1:m2=3:2