Problema Solution
A diver is diving to reefs that are 480 feet below sea level. He starts at a diving station 30 feet below sea level. From there, he dives into the sea at a rate that is no less than -6 feet per second. How long will it take the diver to reach the reef?
Answer provided by our tutors
The distance that the diver needs to dive is 480 - 30 = 450 feet.
The rate of the diving v is >= - 6 ft per second.
t = the time of the dive
Since rate = distance/time follows time = distance/rate:
t <= 450/6
t <= 75 s
The driver will need not more than 75 seconds to reach the reef.