Definition: The spontaneous emission of energy and/or matter from the nucleus of an unstable atom. As a result of this emission, the atom may be converted into an atom of a different element.
Example: Uranium 238

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