Problem 17

Given information

Friction is the force that resists motion when the surface of one object comes in contact with the surface of another.

Step-by-step explanation

FIND THE VALUES

Work done by the friction force is the change in kinetic energy. Since the friction is constant, the work of friction is proportional to penetrated distance d. This work has to dissipate the kinetic energy which is proportional to the speed squared. Hence, the penetrated distance is proportional to the speed squared. If the arrow is fired with double the initial speed, the distance of penetration will be quadrupled.