Explanation:
The ball is in free fall (gravity is the only force acting on the ball), so its acceleration is 9.8 m/s² down during the entire path.
Answer:
I think it is C: salinity of the water
Explanation:
Hence the expression of ω in terms of m and k is

Given the expressions;

Equating both expressions we will have;

Divide both equations by 2π

Square both sides

Take the square root of both sides

Hence the expression of ω in terms of m and k is

On Earth, none of the atmosphere is.
Mass= density x volume
1.3 kg/m^3 x ( 2.5x4x10) m^3
= 130 kg