Question

If a car is speeding down a road at 40 miles/hour (\rm mph), how long is the stopping distance D_40 compared to the stopping distance D_25 if the driver were going at the posted speed limit of 25 \rm mph?

Answer 1

\[v^{2}-u^{2}= 2as\]

Answer 2

what do i plug in for each value

Answer 3

v= final velocity, u= initial velocity, a= acceleration and s= the distance.. so now you tell me..