An amusement park designer wants his swing to have a centripetal
acceleration of 19 m/s2. if the velocity of the swing is 17 m/s, how long
should the chain on the swing be?
o
a. 14.8 m
o
b. 14.0 m
15.2 m
13.6 m

You want to move a heavy box with mass 30.0 kg across a carpeted floor. you pull hard on one of the edges of the box at an angle 30∘ above the horizontal with a force of magnitude 240 n, causing the box to move horizontally. the force of friction between the moving box and the floor has magnitude 41.5 n . what is the box's acceleration just after it begins to move