Problema Solution
Mary runs 100 meters in 13.4 seconds
Amy runs 100 meters in 14.1 seconds
If Mary and Amy finish the race at the same time, how much of a head start does Amy need?
Answer provided by our tutors
14.1 - 13.4 = 0.7
Amy needs a 0.7 second head start
you probably want distance, so Amy's speed is:
100/14.1 = 7.09 m/s
the length of the head start Amy needs is given by:
(100/14.1)*0.7 = 4.96
Amy needs a head start of almost 5 meters