Matt set a record for the men's 100 m freestyle even in swimming. It took him 49.17 s to swim the 50.0 m length of the pool and swim back. Assume that half of Matt's record time was spent traveling the length of the pool. What was his speed?
the full record time would therefore be
the full length of the race in the full record time is
average speed = total distance / total time
total distance / total time