1. The problem statement, all variables and given/known data "Find the displacement for a 1971 Dodge challenger that achieves a velocity of 112km/h [west], accelerating at 2.7m/s^2 [west] for 3.2 seconds." v2 = final velocity d = displacement a = acceleration t = time 2. Relevant equations The equation im given is this: d = v2t - 1/2at^2 3. The attempt at a solution The answer I keep getting is approximately 85.4 but the homework is saying the answer is 113m [west]. This is how im getting 85.4: d = 31 * 3.2 - 1/2 * 2.7 * 3.2^2 d = 99.2 - 13.8 d = 85.4 Coincidentally if you add instead of subtract both numbers, you get the 113m the question is saying the answer is. Am I right to assume that the homework sheet is incorrect?