A car travels in a straight line for 5.3 h at a constant speed of 60 km/h. What is its acceleration? Answer in units of m/s2 So far, to my understanding so far acceleration is change in velocity over time. So 60 over 5.3, which is 11.32 km/h2 Then I converted to m first, which is 1132 m/h2, then from h2 to sec, which is .00524 m/sec2. But that isn't the answer, what did I do wrong?