Ahockey puck is struck so that it slides at a constant speed and strikes the far side of the rink, 58.2 m away. the shooter hears the sound of the puck after 1.9 seconds. the speed of sound is 340 m/s.
how fast was the puck moving?

Explanation:

Let hockey puck is moving at constant speed v

so here we have

so time taken by the puck to strike the wall is given as

now time taken by sound to come back at the position of shooter is given as

so we know that total time is 1.9 s

now we have

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

the answer would most likely be c, because if it's a comical piece of information, it may likely not be true, if it's a site that allows anybody to edit the content, it could mean a five year old is typing the info, and if it's a tv show produced by a celeb, it may have a biased opinion.