AP EAMCET Medical 2018 Shift 2 Paper

The rubber cord of a catapult has a cross-sectional area 1 mm2 and unstretched length 10 cm. If it is stretched to a length 12 cm and a body of mass 5 g is projected from it. then the velocity of projection of the body is
(Young’s modulus of rubber = 5 × 108 Nm−2)