Awrecking ball is being used to knock down a building. one tall unsupported concrete wall remains standing. if the wrecking ball hits the wall near the top, is the wall more likely to fall over by rotating at its base or by falling straight down? explain your answer. how is it most likely to fall if it is struck with the same force at its base? note that this depends on how firmly the wall is attached at its base.

Rank the torques on the five doors shown in the figure above from least to greatest. note that the magnitude of all the forces is the same

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.