1. The problem statement, all variables and given/known data The driver of a truck moving at 30m/s suddenly notices a moose 70m straight ahead. If the driver's reaction time is 0.5s and the maximum deceleration is 8m/s^2, can he avoid hitting the moose without steering to one side? 3. The attempt at a solution First I found out how long it would take the driver to stop. v = u + at 0 = 30 -8t t = 3.75 I then added the drivers reaction time of 0.5s so we land up with 4.25s Then I tries to fid out the distance covered by using: s = ut + 1/2at^2 s = 30(4.25) + 1/2(-8)(4.25)^2 s = 127.5 - 72.25 s = 55.25m It would seem that the truck stops before 70m but the answer given in the book says no he doesn't stop in time and needs a further 1.3m. Please help.