1. A truck covers 50.0 m in 9.00 s while smoothly slowing down to final speed 2.40 m/s. Find the trucks original speed. Find its accleration. 2. Relevant equations im using x = v0*t + 1/2 *a*t2 and v2 = v02 + 2*a*x I believe this is what the question gives me. Xo = 0 Xf = 50 Vo = ? Vf = 2.4 a = ? t = 9 secs 3. im positive that i have to use the two equations stated above. but both equations have accleration and Vo as unknown variables. i just need a hint on whats the best way to find accleration or Vo. I dont know if im clear what im saying but its the best way i can explain it. sorry.