Alight ray travelling from diamond into air has an angle of refraction of 56 degrees. a piece of glass is then placed right next to the diamond

The record distance in the sport of throwing cowpats is 81.1 m. this record toss was set by steve urner of the united states in 1981. assuming the initial launch angle was 45° and neglecting air resistance, answer the following. (a) determine the initial speed of the projectile. m/s