A bullet with mass 20 grams and velocity 100 m/s collides with a wooden block of mass 2kg. The wooden block is initially at rest, and is connected to a spring with k =800 N/m. The other end of the spring is attached to an immovable wall. What is the maximum compression of the spring? Note: you may assume that the spring is massless and that the collision of the bullet and the wooden block is completely inelastic.