John rides his motorcycle with a constant speed of 40 miles per hour. how far can he travel in 1/2 an hour?

Several students in the group made comments to the coach about the back pack. which student has the correct analysis of the forces and motion of the back pack?

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.

Positrons are spontaneously emitted from the nuclei of