Which reasons explain why a theory would be changed or replaced?

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

Newtons view of arrangement of the universe. don't copy from anywhere.

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