Mr. Ra pushes a 800 kg sled from rest with 1600 N [Fwd 10^o Dwn]. Ms. Sol assists by pulling with 800 N [Fwd 15^o Up]. The coefficient of kinetic friction is 0.250. Determine the velocity of the sled after 2.5 s. This time you will need to find the normal force first.

Ms. Mercury pushes a 25 kg buffing machine forward with a force of 30 lbs [Forward 20^o Down]. The coefficient of friction is 0.275. Determine time it takes to reach the desired speed of 1.5 m/s from rest.

Ms. Venus pulls a sleigh massing 1 tonne with 220 lbs [East 30^o Up]. Ms. Luna helps her out by pushing with 165 lbs [East 10^o Down].Determine the coefficient of friction if they maintain a uniform velocity of 1.5 m/s