4. Two express trains started 5 minutes apart. Starting from rest, each is capable of a maximum speed of 160 km/h after uniformly accelerating over a distance of 2.0 km.
a. What is the acceleration of each train?
Starting from rest,
b. How far ahead is the first train when the second train starts moving?
c. How far apart are they when they are both traveling at maximum speed?

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.

we have been given a quadratic function and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is .

if we restrict the domain of this function to either or , it will become one to one function.

let us know find its inverse.

upon interchanging x and y, we get:

let us now solve this function for y.

hence, the inverse function would be if we restrict the domain of original function to and the inverse function would be if we restrict the domain to .

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.