Question

A scientist uses a submarine to study ocean life.

She begins at sea level, which is an elevation of 0 feet.
She travels straight down for 36 seconds at a speed of 2.9 feet per second.
She then ascends for 24 seconds at a speed of 1.8 feet per second.

At this point, what is her elevation, in feet?

Answer 1

61.2 feet below sea level

Explanation:

distance = rate * time

to calculate the number of feet she traveled down you can multiply

36 and 2.9 to get 104.4

to calculate the number of feet she traveled up you can multiply

24 and 1.8 to get 43.2

subtracting the two distances you get 61.2