The velocity of a vehicle is typically
expressed relative to which of the following?

Suppose that f : rn → rm and that a ∈ k, where k is a connected subset of rn . suppose further that for each x ∈ k there exists a δx > 0 such that f(x) = f(y) for all y ∈ bδx (x). prove that f is constant on k; that is, f(x) = f(a) for all x ∈ k

Matter that emits no light at any wavelength is called

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?