Can you calculate the average net force on a bullet embedded in wood at 320 m/s?

[Snoopy 103]

A bullet of mass 20g strikes a fixed block of wood at a speed of 320 m/s. The bullet embeds itself in the block of wood, penetrating to a depth of 6.0 cm. Calculate the average net force acting on the bullet while it is being brought to rest

 

[rock.freak667]

Well what have you tried? You must post some attempt before anyone can help you as per forum rules.