If the mass of each ball were the same, but the velocity of ball a were twice as much as ball b, what do you think would happen to the final velocity of each ball after the collision? to answer this question, create a hypotheses in the form of an if-then statement. the “if” is the independent variable, the thing that is being changed. the “then” is the dependent variable, or what you measure as the out come.

The law of conservation of energy states that energy cannot be created or , energy can be from one substance to another. the first blank is ' destroyed ' and for the second blank is ' transferred '

Assume this car is driven off a cliff . how many arrows of force need to be drawn in the free body diagram? assume no air resistance -five -one -three -four

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.