Question

13. A submarine was cruising at a depth of

153 m. It then rose at 4.5 m/min for 15 min.
a) What was the submarine's depth at the
end of this rise?
b) If the submarine continues to rise at the
same rate, how much longer will it take
to reach the surface?

Answer 1

At the end of the rise it is at 85.5m

It will take about 38 minutes to reach the surface