Gravity pulled materials together forming the planets in our solar system. The inner planets consist of dense material, such as iron, which was pulled to the center of the planets. Materials such as ice, liquid and gas formed the outer planets. Scientist identify this process as:.

You are driving to the grocery store at 20 m/s. you are 110m from an intersection when the traffic light turns red. assume that your reaction time is 0.50s and that your car brakes with constant acceleration. how far are you from the intersection when you begin to apply the brakes? what acceleration will bring you to rest right at the intersection? how long does it take you to stop after the light changes? the known values: vi=20m/s xi=110m t=.50s vf=0m/s xf=0m a=?