A child on a sled slides down an icy slope, starting at a speed of \(2.5 \mathrm{~m} / \mathrm{s}\). The slope makes a \(15^{\circ}\) angle with the horizontal. After sliding \(10 \mathrm{~m}\) down the slope, the child enters a flat, slushy region, in which she slides for \(2.0 \mathrm{~s}\) with a constant negative acceleration of \(-1.5 \mathrm{~m} / \mathrm{s}^{2}\) with respect to her direction of motion. She then slides up another icy slope that makes a \(20^{\circ}\) angle with the horizontal. How far up the second slope does she slide?