Aball is rolling down a hill. at one point near the top of the hill, its velocity is 2 m/s. further down the hill, its velocity is 9 m/s. what is ? v? 9 m/s 7 m/s -7m/s -7m/s2

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere

How many major plates cover the earth

In a cross between individuals of a species of tropical fish, all of the male offspring have long tail fins, and none of the females possess the trait. mating two of the f1 fish fails to produce females with the trait. explain the inheritance pattern of the trait.