AP EAMCET Medical 2018 Shift 2 Paper

An object of mass 2 kg moving with velocity 20 ms−1 collides a stationary metal body of mass 100 g placed on a rough horizontal plane of coefficient of friction 0.5. After the collision, the first body comes to rest and the second body moves on the roughhorizontal plane through 100 m before coming to rest. If the energy lost in the collision is absorbed as heat by the second body, then the raise in temperature of the second body is
(specific heat capacity of the metal = 0.2 J g−1k−1 , g = 10 ms−2)