It is the Pacific Ocean.
There's not really a way to give evidence, so hope it helps!
ZC. The forward force of the surfboard's acceleration is balanced by the backward force of the surfer's mass.
Weight = (mass) x (local gravity)
8.2 N = (5 kg) x ( g )
Divide each side
by 5 kg : 8.2 N / 5 kg = g
g = (8.5 kg-m/s²) / (5 kg)
= (8.5 / 5) m/s²
= 1.7 m/s² .
Sample Response: The technology being described is fiber optics. Since they are small and flexible, they enable doctors to see areas that they might otherwise be unable to see without surgery.