An airplane flies 40km directly south in 10 minutes and 20 km directly east in five minutes, its average speed is: a)2.98km/min
b)2km/min
c)8km/min
d)4km/min

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx hurrim timed

Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f

Why does lightning travel from clouds to the ground?