If a ball is rolling down a hill, it has both kinetic and potential energy. The ball has 38 J of potential energy because of its height and 80J of kinetic energy because
of its motion. How much mechanical energy does the ball have

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?

Who was the first scientist to measure speed as distance over time?

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?