Answer:
d = 102 below the surface of the sea.
Step-by-step explanation:
65 Seconds -- Direction down
d = ?
r = 4.9 feet / second
t = 65
d = 4.9 * 65 = 318 feet below sea level.
60 seconds -- direction up
t = 60 seconds
r = 2.1 feet/second
d = 2.1 *60 = 126 upwards.
Answer
The answer is neither one of the two distances.
d = 318 - 216
d = 102 below the surface of the sea.
Note: you might be asked to use a minus sign in your answer. I would dispute that. You are not told which sign down and up should take. All you can do is record the distance as I have.
