A farmer is pulling a wagon full of maple syrup of total mass M=100.kgM=100.kg up a hill. Suddenly, the wagon breaks loose, and starts rolling downhill on its massless, frictionless wheels. After it has covered a distance d1=15.0md1=15.0m its speed is 6.00m/s6.00m/s. The farmer (mass m=71.0kgm=71.0kg) gives chase, jumping onto the wagon platform when it has moved a total distance of d2=17.0md2=17.0m. Her speed when she jumps on isv1=7.00m/sv1=7.00m/s relative to the wagon. Her intent is to save the syrup, but she ends up sliding all the way down the wagon, and off the other end. If her speed relative to the wagon at the moment she slides off is v2=6.00m/sv2=6.00m/s, what is the speed of the wagon relative to the ground when the farmer slides off? Answer in m/s