the sears tower is 443 m rall. Mr tessmer wants to set the world's stair climbing record and runs all the way up to the roof of the tower in 15.0 min. On the way down, he is so tired that it takes him twice as long to descend. what is Mr tessmers average speed (in m/s) during the entire trip?

Acup of coffee sits on the dashboard of an automobile. the car goes around a sharp curve. even though you hold the cup still, coffee still splashes out. this can best be explained due to a) density. b) friction. c) gravity. d) inertia.

The two required components for a generator are

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)