12. An archer on top of a 50-story (150 meter) building shoots an arrow horizontally with a velocity of 50 m/s. What is the velocity of the arrow after 1.0, 2.0, 3.0, 4.0, and 5.0 seconds? Has it hit the ground after
5.0 seconds?

Which of the following is not am example of a polymer? protein nylon kevlar concreta

Assume that a person skiing high in the mountains at an altitude of h = 15100 ft takes in the same volume of air with each breath as she does while walking at sea level. determine the ratio of the mass of oxygen inhaled for each breath at this high altitude compared to that at sea level. assume that the air composition (i.e. % of air that is oxygen) is the same at sea level as it is at 15100 ft.

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value