Inelastic collision: $m1v1+m2v2=(m1+m2)vf$ where $m1,m2=$ mass $1$ and mass $2,v1,v2$ and $vf$ is mass velocity, mass $2$ velocity and final velocity. Given a $10g$ bullet is fired at a block of wood at rest $(0\frac{m}{s},m=5kg),$ after the bullet enter the wood, both wood and bullet moving with velocity $0\mathrm{.}6\frac{m}{s}.$ Write the program to determine the initial velocity of bullet before entering the wood. Write a program to determine, for given mass of wood: $1kg,3kg,7kg,9kg,$ the final velocity will be lower or higher than initial final velocity of both wood and bullet.