A 2000kg car traveling 30m/s slams on their brakes to stop. maximum braking force of the car is 20,000 Newton’s, how far does the car travel from the time they slam on their brakes till it stops?

Ultraviolet radiation is dangerous because it has a high enough energy to damage skin cells. what is the best explanation of the relationship between wavelength and wave energy? a) wave energy is related only to frequency, not wavelength. b) longer wavelengths have lower frequencies but higher energy. c) the shorter the wavelength, the lower the frequency and the higher the energy. d) the shorter the wavelength, the higher the frequency and the higher the energy.