A 50 kg girl developes 250 watts of power as she runs up two flights of stairs to a landing a total of 5.0 meters vertically above her starting point. Calculate the time required for the girl to run up the stairs

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

Is the vertical component of velocity ever zero?

Which statement is true? a) the work done to lift an object 6 meters is greater than the gravitational potential energy it gains. b) the work required to push an object is less than the work required to pull an object the same distance. c) the work required to raise an object to a height is equal to the gravitational potential energy the object gains. d) the work done against gravity to lift an object straight up is greater than the work required to roll it up a ramp.