Jcota2

You have a summer job at your university’s zoology department, where you’ll be working with an animal behavior expert. She’s assigned you to study videos of different animals leaping into the air. Your task is to compare their power outputs as they jump....

In a railroad switchyard, a 48ton freight car is sent at 6.8mi/hr toward a 28ton car that is moving in the same direction at 3.8mi/hr .What is the speed of the pair after they couple together?What fraction of the initial kinetic energy was lost in the col...