Circular motion: a centrifuge whirls a test tube around in a circle with a radius of 0.350 meters. the test tube (0.250kg) makes it around the circular path 8 times every second. what is the centripetal force provided by the centrifuge to make this happen?

Fred and gene are hang gliding. fred is 700 feet above the ground and descending at 15 ft/s. gene is decending as shown in the table. interpret the rates of change and initial values of the linear functions in terms of the situations they model. show all work. freds equation is f(x)=-15x+700. ( genes is the table attached)