Sarah, who has a mass of 55 kg, is riding in a car at 20 m/s. she sees a cat crossing the street and slams on the brakes! her seatbelt stops her frpm flying forward, bringing her to rest in 0.5 seconds. how much force did the seatbelt put on sarah?

How many major plates cover the earth

During the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone