1. The problem statement, all variables and given/known data A child pushes his friend in a wagon along a horizontal road and then lets go. The wagon rolls for 10.0 seconds before stopping. It travels a distance of 20.0cm during the last 1.00s of its motion. Assuming uniform acceleration, (a) How fast was the wagon travelling at the instant the child released it? (b) How fast was the wagon travelling when it had covered half of the distance? 2. Relevant equations 3. The attempt at a solution I know this is a really basic question, but i've been over analyzing it and now i've gotten myself all confused. My first problem is working with uniform acceleration. Does that mean every 1.0s the wagon travels 0.20m? Working under that assumption, I came up with: (a)Vi= 0.20m x 10.0s Vi= 2m/s Therefore, as the wagon was released it was travelling 2 m/s[ along the horizontal] (b) Still undergoing uniform acceleration: 0.20m x 5.0s =1m/s Therefore, the wagon was travelling exactly half of the speed it was travelling initially.