Calculate the average speed of a complete round trip in which the outgoing 230 km is covered at 96 km/h , followed by a 1.0-h lunch break, and the return 230 km is covered at 55 km/h .

Select all the correct answers. which three statements about electromagnetic radiation are true?

Which planet do you think would be easiest for humans to colonize some day?

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=?