As a mass on a spring moves farther from the equilibrium position, how do the velocity, acceleration, and force change? The velocity decreases, the acceleration decreases, and the net force decreases.
The velocity increases, the acceleration decreases, and the net force decreases.
The velocity increases, the acceleration increases, and the net force decreases.
The velocity decreases, the acceleration increases, and the net force increases.

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90