Not only are you frustrated, you're also confused about your school subject.
How far did the bike go in 50.4 seconds?
A bicycle trip takes 50.4 seconds. What is the average speed of the bicycle?
my work: 50.4/ 680m = 13.49m/s
5 answers
Post the entire question. The question isn't complete; we don't know all the measurements(numbers) that way.
I assume that since you put 680 m there, the bike must have traveled 680 meters in 50.4 seconds. However, it is supposed to be 680/50.4, so 680/50.4 is approximately 13.49 mps. Your answer is correct, but change your work.
That is the full question from the teacher.
Where did you get 680 m?