Arock is dropped into a well hits the water in 5 secs. if there is no air resistance, what would be the rocks final speed?

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?

Convection currents are caused by differences in what two things?

Emergent properties of living systems are defined as properties that .