PLEASE I NEED HELP WITH THIS object starts moving from rest by constant acceleration. distance covered in 7th second is greater then in 1st second by:
a) 4 times
b) 13 times
c) 11 times
d) 7 times
e) 3 times

(an answer with explanation would be greatly appreciated)

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 this 50 question test the layer of earth's atmosphere where atoms and molecules escape into space is referred to as the a) exosphere b) ionosphere. c) mesosphere d) thermosphere

What ions are formed when hcl dissolves in water?