You are travelling at 60km/h when all of a sudden you see a pink elephant which is 0.125km down the road. Your car can slow down at a rate of -5.0m/s^2. If it takes you 20 m of distance to react and hit the brake, how far will you be from the elephant when you stop?
D = (V1+V2/2)t
A = V2-V1/T
The Attempt at a Solution
To be honest, I really don't even know where to begin with this problem. I don't even know how to visualize this.
Okay so the break is hit when it's 0.105km away. (0.125 - 20).
Time = Velocity / Acceleration
= 60/-0.03 (5m = 0.005km/s = 0.03km/h)
= 200 hours?
Just from this point I know it's wrong. I can't continue further because I'm already starting off on the wrong foot.
I need some guidance in the RIGHT direction, please & thank you!
Also, the answer is supposed to be 77m.