Hitting a home run in baseball is difficult, because it requires a lot of force. Most home runs are hit off of fastballs. Which principle about impact force says that this makes sense, and why? (please help!!!)

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.