Due in an HOUR!!! Early Physics problem.. relating drag, weight, and speed. 1. The problem statement, all variables and given/known data A 1.74 m wide, 1.48 m high, 1500 kg car hits a very slick patch of ice while going 21.0 m/s. Air resistance is not negligible. If friction is neglected, how long will it take until the car's speed drops to 18.0 m/s? 2. Relevant equations I think this one would be useful: final velocity = initial velocity + acceleration x change in time 3. The attempt at a solution My attempts are WAAYY off. I have two pages of work done and an hour of my time and nothing to show for it. I tried to calculate drag as part of the acceleration = net force / mass equation, but I don't know if that was right. Please hurry! It was the last question on my online set of homework due in an hour.