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47.A ball of mass m is moving with velocity v collides head on with another identical ball at rest. 1/4 th of kinetic energy is lost in collision then the coefficient restitutuion is |
| Answer» 47.A ball of mass m is moving with velocity v collides head on with another identical ball at rest. 1/4 th of kinetic energy is lost in collision then the coefficient restitutuion is | |