Hi. I am working on an emergency stopping distance lab and was hoping for some help.

Thank you.

*Emergency Stopping Distance = Length of the Impacted Tractor trailer = 53 ft = 16.15 m

What is the Mass (m2) of a Ford Focus in Kilograms ? 3000 lbs = _1360.777__ kg

Speed of the Car before collision, v1 = _49.2126_ mph = 22 m/s

Calculate the Stopping distance required for the Truck to come to a complete stop

1. use v = _22_ , (The speed in meters per second is equal to the miles per hour multiplied by 0.44704.)

tr = .25s, (Average reaction time)

u = .68_ for the dry road

u = .58_ for the wet road

g = 9.81)

Reaction distance: RD = v*tr = ____

Breaking Distance: BD = v^2/2ug = _____

Stopping Distance = RD + BD = _____ meters