A ball is equipped with a speedometer and launched straight upward. The speedometer reading four seconds after launch is shown at the right. At what approximate times would the ball be moving upward and display the following speedometer readings?

Could someone me find the answer to this problem.

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

Which accounts for an increase in the temperature of a gas that is kept a constant volume