HELP!! Is my answer correct?? Is negative Friction possible?!? 1. The problem statement, all variables and given/known data A dogsled team has four dogs that pull a person and a sled with a combined mass of 100 kg. A) They start from rest and reach a speed of 45 km/h in 2.5s. What is the average force applied by each dog? B) Suppose each dog can pull with a force of magnitude 150 N. What is the frictional force acting on the sled 3. The attempt at a solution A) a=Vf-Vi/t a=45-0/2.5 a=45/2.5 a=18 m/s2 Fnet=ma Fnet=(100)(18) Fnet=1800N/4 dogs Fnet=450 N ∴ Average force applied by each dog is 450 N B) T-Ff=ma 600-Ff=ma 600-Ff=100(18) 600-Ff=1800 Ff=600-1800 Ff=-1200 N ∴ the Frictional force acting on the sled is -1200 N Is my answer correct for part A and B ?? Its for an assignment due tomorrow and I want to make sure its correct.