Collision Combined with Friction (Embedding/Momentum then Sliding)
Use conservation of momentum for a collision (e.g., bullet embedding in block) followed by friction-based deceleration to find friction coefficient or stopping distance.
A bullet of mass 4 g is fired horizontally with a speed of $300 \mathrm{~m}/\mathrm{s}$ into 0.8 kg block of wood at rest on a table. If the coefficient of friction between the block and the table is 0.3, how far will the block slide approximately? (1) 0.19 m (2) 0.379 m (3) 0.569 m (4) 0.758 m