38. A girl exerts a force of 45 N on a boy (mass of boy is 35.0 kg), in the direction indicated, with an angle of 35. The boy is sitting on a sled of mass 5.0 kg. The coefficient of kinetic friction between the sled and the snow is 0.07. (5 marks) a. Find the acceleration of the boy and sled. (1 mark) b. Draw a FBD for the boy and determine the minimum coefficient of static friction between the sled and the boy neede, so that the boy remains on the sled without needing to hold on. (2 marks) c. If the sled is travelling at 0.35 m/s at time t = 0 s, how fast is the sled travelling 2.0 m further?