1) A Baseball player sprinting at 4.5 m/s^ begins to slide with his body flat on the ground when 2.8 m from home base. The coefficient of friction between the players uniform and the ground is 0.30. Does he make it home? If so what is his speed he reached home?
2) A girl pulls a sled along a level dirt road by means of a rap attached to the front of the sled. The mass of the sled is 40 kg. the coefficient of kinetic friction is uk=0.60, and the angle between the rope and the road is 30 degrees. What pull must the girls exit to move the sled at a constant velocity?