Achild sits on a partially filled balloon and decreases the volume by half. what happens to the pressure inside of the balloon?
a. it increases
b. it decreases
c. it stays the same

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively

If the wheels lock when braking suddenly the vehicle: a: loses traction b: lose steering wheel ability c: gain speed slightly d: gain steering ability

Work = force × a. work b. energy c. distance d. momentum