Cheetahs the worlds fastest land animals can run up to about 125km/h. a cheetah chasing an impala runs 32m [n], then suddenly turns and runs 46m [w] before lunging at the impala. the entire motion takes only 2.7seconds.
a) determine the ceetahs average speed for this motion.
b) determine the cheetahs average velocity

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=?