An elevator moving down passes its neighbor, an elevator moving up. their speed relative to one another is 8 m/s. what is the velocity of each elevator relative to someone standing on the first floor? assume that the elevators are traveling at the same speed, and that the upward direction is positive.

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

According to the image below, which season is about to begin in the southern hemisphere? a. summer b. autumn c. winter d. spring

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=?