Abicycle and its rider have a combined mass of 80 kg and a speed of 6 m/s. what is the magnitude of the average force needed to bring the bicycle and its rider to a stop in 4 seconds?

120N

Explanation:Please see attachment for explanation

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 .