10KG ball travels at a speed(velocity) of 5ms and hits a 4KG balls which is travelling at the speed of 2ms and travelling to the same direction and 1st one.what are the velocities of two balls after the collision.
I did this but never got the answer in the back of the book.here is how i did
M1 <<< doesn't mean M multipied by 1.it is just the notation
(M1*U1 + M2*U2) = (M1*V1 + M2*V2) ---->(left drirection)
10*5 + 4*2=10*V1 + 4*v2 =
58=10*V1 + 4*v2 ------ (1)
=(3/2)=V2-V1 -------(2)[!--?can somebody tell me why is this 5-2,not 5+2
even they are travelling to the same direction?(book says so,that is why i
(2) equation * 4
and (1)eq-multiplied (2)nd equation gives:
58-6=10*V1+4V2 - 4*V2+4*V1
but that is not the answer given on the book.what is the error?