1. The problem statement, all variables and given/known data A wooden block with mass 1.25 kg is hit by a bullet with mass 5.00 g and the speed vi according to the figure. The bullet sticks in the block and together they go up to the maximum height of 22.0 cm. Calculate the initial speed of the bullet. 2. Relevant equations 3. The attempt at a solution hi = 0 so it can be removed from the equation. Before the collision the objects must be treated as individual, afterwards they can be treated as one single object. vf = 0 when the objects reach their maximum height so it can also be removed from the equation. So with m1=bullet and m2=block we only have left: (m1+m2)*g*hf = 0.5*m1*vi2 Solving for vi=√(2/m1*(m1+m2)*g*hf) This gives me vi = 32.9 m/s. Which apparently is incorrect. What did I do wrong?