As an airplane is taking off at an airport its position is closely monitored by radar. the following three positions are measured with their corresponding times: x1 = 135.94 m at t1 = 3.20 s,
x2 = 169.39 m at t2 = 3.70 s,
x3 = 206.88 m at t3 = 4.20 s.
what is the acceleration of the airplane at t2 = 3.70 s? (assume that the acceleration of the airplane is constant.)

According to newton’s first law of motion, which force is expected to cause a body to accelerate?

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.

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point