1) Determine the force of friction (in Newtons) between the doll and the counter ;2) Determine the magnitude of the acceleration (in m/s/s) of the pencil/doll system as it is sliding to a stop;3) Determine the speed (in m/s) of the pencil/doll system just after the collision;4) Determine the momentum (in kg.m/s) of the eraser/doll system just after the collision;5) Determine the speed (in m/s) of the pencil just prior to the collision.

Stabbing Sponge Bob (5 questions) A physics student flips out when he keeps missing the same question on a Concept Builder. Outraged by the futility of his efforts, he flings his .05 kg mechanical pencil across the room. The pencil lodges into a 0.221 kg Sponge Bob doll that is at rest on a countertop. Once in motion, the pencil/doll combination slide a distance of 0.119 m across the countertop before stopping. The coefficient of friction between the doll and the countertop is 0.325. (use g=9.8 m/s/s)