A bullet of mass 10 × 10-³ kg moving with a speed of 20ms-¹

Last updated: 7/9/2022

A bullet of mass 10 × 10-³ kg moving with a speed of 20ms-¹ hits an ice block (0°c) of 990 g kept at rest on a frictionless floor and gets embedded in it. If ice takes 50% of K.E, for melting, then the mass of the ice block that has melted is(J = 4.2J/Cal ) (Latent heat of ice = 80 cal/g)