Yvonne has gained a reputation for her cheesecakes. she takes orders for 10 cheesecakes and spends 8.5 hours on one saturday baking them all. she earns $120 from selling these cheesecakes. a. what is the average length of time to make one cheesecake? give your answer in minutes. b. what does yvonne charge for each cheesecake? c. how much money is yvonnne earning per hour for her work?

11. you want to calculate the displacement of an object thrown over a bridge. using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?

There is a theory that indicates that dinosaurs became extinct when about 65 million years ago, a large asteroid hit the earth surface. dust caused by this collision blocked the sunlight reaching the earth's surface and many forms of life became extinct due to the cold. fearing this threat, how large the radius of an asteroid should you be looking for if the dangerous asteroid size is approximately the same as the one that killed the dinosaurs? available data suggests that about 18% of that asteroid's mass ended up as a dust spread evenly over earth after eventually settling out of the upper atmosphere. about 0.0180 g/cm^2 of dust, which is chemically different than the earth's rock, covered the earth's surface. typical asteroids have a density of about 1.9 g/cm^3. now that we know the size of the asteroid, how much energy was released during impact, assuming all of it was just the kinetic energy of the asteroid right before the impact?

If the speed of a particle triples ,by what factor does its kinetic energy increase?