Using kinematics to get started use algebra to simplify an equation that shows how the momentum of a falling object changes over time. Assume that there is no friction and that the object starts with
zero initial velocity. Solve for p in terms of mass, acceleration due to gravity, and time.

Ascientist notices that an oil slick floating on water when viewed from above has many different colors reflecting off the surface, making it look rainbow-like (an effect known as iridescence). she aims a spectrometer at a particular spot and measures the wavelength to be 750 nm (in air). the index of refraction of water is 1.3