Physics Movement Question. Help please???

Question

A car rolls off the back of a truck as it is being delivered to its owner. The truck is traveling along a straight road at 60km/h^-1. The car slows down at a constant rate, coming to a stop over a distance of 240m. It has been a full minuite before the truck realises the car is missing so he brakes immediately leaving a 25m skidmark on the road. The drivers reaction time is assumed to be 0.5s.

How far back is the car when the truck stops??

Answer 1

I read it to say that the truck moves for 1min after the initial release of the car.  He travels for 1 minute at a rate of 60km/hr, so is 1km/min.  The car, meanwhile, has traveled behind him, going slower and slower, for 240m total.  So during this minute, he moved 1km = 1000m.  So car is 1000m - 240m = 760m away at end of this time.

He then realizes the car is missing.  He travels at 1000m/min = (1000/60)m/s.  It takes him .5s to put his foot on brakes, so he travels .5s x (1000/60)m/s = 8.33m.  Of course, he then travels 25m more.  So the stopping took 33.33m.

So total distance away is 760 + 33.33 = 793.33m from the car now.

Answer 2

240m +(50/3m/s)(60.5)+24=1272.3333m

make it a good day.