15 The diagram below shows a rock on the end of a string

Last updated: 4/25/2023

15 The diagram below shows a rock on the end of a string being whirled around in a circle in the horizontal plane The motion is viewed from above and the stone is rotating clockwise What are the directions associated with its instantaneous velocity and instantaneous acceleration respectively N C W a south east ST S E b east west c south south d west west e south west 16 Imagine you are a passenger upside down at the top of a vertical looping roller coaster The centripetal force acting on you at this position a is perhaps the least of anywhere in the loop c is supplied partly by the seat of the roller coasterd is directed vertically downward e all of the above b is supplied at least partly by gravity