A 31grams bullet, when fired from a gun into a 930g block of wood held in a vise, penetrates the block to a depth of 11.3cm. This block of wood is next placed on a frictionless horizontal surface, and a second 31g bullet is fired from the gun into the block. To what depth will the bullet penetrate the block in this case? Use g=9.8 m/s² and state your answer in centimetres to the nearest hundredth of cm.

A 31grams bullet, when fired from a gun into a 930g block of wood held in a vise, penetrates the block to a depth of 11.3cm. This block of wood is next placed on a frictionless horizontal surface, and a second 31g bullet is fired from the gun into the block. To what depth will the bullet penetrate the block in this case? Use g=9.8 m/s² and state your answer in centimetres to the nearest hundredth of cm.