Question

150 kg mass ke cannon se 25kg ka ek gola 750m/s ke velocity se nikla. bataeye ki cannon kitane velocity so peechhe hatega?

Answer 1

306.18621 m/s is the velocity of cannon

Answer 2

$according \: to \: the \ \\ : conservation \: of \: linear\: momentum \\ \\ liner \: momentum \: before \: firing = \: liner \: momntum \ \: \: after firing \: \:$


0 = m1 v1 + m2v2

v2 = -25 ×750/150
= - 125 m/s
the negative sign show that the gun move opposite to the direction of motion of bullet.