Two balls having linear mometa $P_{1}=π^andP_{2}=−π^$ undergo a collision in free space .There is no extrenal force acting on the balls Let $p_{1} andP_{2}$ be their final momenta The following option(s) is (are) Not Allowed for any non zero value of $p,a_{1},a_{2,b_{2},c_{1}andc_{2}}$