6. A 15.5 kg rock falls from a cliff at a height of 138 m to a cliff that is 79 m above the ground. How fest the rock falling when it strikes the lower cliff?

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)

The amount of potential energy possessed by an elevated object is equal to what?

Which form of cell division creates the sperm and egg, resulting in half of the chromosomes as the other cells?