A ball initially moves at 6.50 m/s and later moves at 3.25 m/s in the same direction. If the net force acts in the opposite direction to the ball's motion producing an impulse of 9.70 Ns, what must be the weight of the ball, in Newtons

(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

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.

Write down two additional questions about earth's magnetic field that will make your presentation more informative.