1. The problem statement, all variables and given/known data A sports car accelerates in third gear from 48.3 km/h to 80.5 hm/h in 3.7 seconds. (a)What is the average acceleration of this car in m/s^2? (b) If the car maintained this acceleration, how fast would it be moving one second later? 2. Relevant equations a= dv/dt 1km = 1000 m 1 h = 60s 3. The attempt at a solution (a) I did 48.3 km/h to 805 m/s and 80.5 km/h to 4025/3 m/s; plugged them into the a formula-> (4025-(805)3)/3 which gives you (1610/3)/3.7 (since 3.7 is delta t), and my final answer 145 m/s^2. (b) This is the part I'm having trouble with, do I just use 4.7 instead of 3.7 for t?