Ascience class did an investigation to see how many breaths it took for each student to blow up a balloon. jason blew up his balloon with the fewest breaths. which of these might explain why jason took fewer breaths to blow up his balloon? a. jason suffers from allergies. b. jason has a cold. c. jason is very short. d. jason plays a lot of sports.

This problem has been solved! see the answera non-uniform fire escape ladder is 6.0m long whenextended to the icy alley below. it is held at the top by africtionless pivot, and there is neglibible frictional force fromthe icy surface at the bottom. the ladder weighs 250n, and it'scenter of gravity is 2.0m along the ladder from the bottom. amother and child of total weight 750n are on the ladder 1.5m fromthe pivot. the ladder makes an angle θ with the horizontal.find the magnitude and direction ofa) the force exerted by the icy alley on the ladderb) the force exerted by the ladder on the pivotc) do your answers in part a and b depend on the angle?

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.