1. The problem statement, all variables and given/known data I want to calculate the travelled length of a car. A travelling car with a acceleration from 0 m/s to 19.4 m/s in 10 sec. From there it has a speed of 19.4 m/s for 11 sec. After the 21 sec. the car hit the brakes, and deaccelerates to 0m/s in 3 sec. 2. Relevant equations s=-1/2*a*t^2 3. The attempt at a solution I find the acceleration in the to periods first Acceleration = 19.4/10sec = 1.9 m/s^2 Deacceleration = -19.4/3sec. = -6-47 m/s^2 The I want to divide the travelled length for each individual timeperiod. The first period (10 s) is = 1/2 * 1.9 * 10^2 = 95 meters Seceond period (11 s) is = 19.4*11 = 213.4 meters Third period (3 s) = -1/2*-6.47*3 = 9.7 meters Travelled distance in all = 95+213.4+9.7 = 336.1 meters. Is this correct?! And yes I'm new here, so hello to everyone. Hope this can help me be better at phys/maths. I'm starting engineering soon, so I better get this handled!