//Body moving to the right
v2=3  //m/sec
u2=-10  //m/sec
v2=4  //m/sec
//Applying principles of conservation of momentum
v1=((80*3)-100-40)/(80)  //m/sec
//Defination of coeff. of restitution gives
e=(4-1.25)/(3+10)  
printf("\nv1=%.3f m/sec\ne=%.3f ",v1,e)