an object falls from a high building and hits the ground in 9.0 seconds. ignoeing air resistance, what is the distance that it fell?

Newtons view of arrangement of the universe. don't copy from anywhere.

Which type of reaction is shown in this energy diagram? energy products activation energy reactants time o a. endothermic, because energy is released to the surroundings o b. exothermic, because energy is absorbed from the surroundings o c. exothermic, because energy is released to the surroundings o d. endothermic, because energy is absorbed from the surroundings

What would be the radius of the earth if it had its actual mass but had the density of nuclei? express your answer to two significant figures and include the appropriate units.