Question

A body of mass m1 moving with a uniform velocity of 40 ms collides with another body of mass m2 at reat and then the two together begin to move with a uniform velocity of 30ms the rratio of their mases m1/m2 is

Answer 1

v1=40,v2=0and v3=30
here v1 for m1 , v2 for m2 and v3 for (m1+m2)

m1v1+m2v2= (m1+m2)v3
40(m1)+0(m2) = (m1+m2)30
40m1 = (m1+m2)30
4m1=3m1+3m2
4m1-3m1=3m2
m1=3m2
m1:m2=3:1

Answer 2

Answer:

$3$

Explanation:

Hope it will help u.....??