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!!)

Shelly experiences a backward jolt when the driver starts the school bus. which of the following explains this phenomenon? a. the inertia of shelly b. the inertia of the bus c. the normal force of the seats on shelly d. the net force acting on shelly in a backward direction e. a zero net force acting on shelly

Energy transformations that involve one transformation from one type of energy to another are called transformations.

Emergent properties of living systems are defined as properties that .