In a ballistics demonstration a police officer fires a bullet of mass 60.0 g with speed 200 ms-1 on soft plywood of thickness 4.00 cm. The bullet emerges with only 8 percent of its initial kinetic energy. What is the emergent speed of the bullet?
1
56.55 ms-1
2
50.89 ms-1
3
119 ms-1
4
63.2 ms-1