How many feet does it take to stop an ambulance at the following speeds (the vehicle weight is approximately 11,000 pounds)?

Research the following information:
How many feet does it take to stop an ambulance at the following speeds (the vehicle weight is approximately 11,000 pounds)?
Dry pavement 60 MPH
Wet Pavement 60 MPH
Dry pavement 40 MPH
Wet Pavement 40 MPH
Take the number of feet found under dry pavement conditions and actually walk outside and pace it off, turn around and what do you see and what is your reaction (YOU MUST PACE THIS OFF!!!!!)
Write a narrative on the information obtained from the data above, please cite any references. Also, include things that can increase stopping time that we should also consider as drivers when responding to an incident.