Hello, please solve these tasks and clearly explain the solutions. Thank you in advance

Problem 3 (25 pts) A motorboat of mass m = 3 tons starts to move from rest. After 33 seconds, its velocity becomes 2 m/s. The engine force propelling the boat is constant throughout the whole period of the motion. Find the maximum velocity of the boat (m/s, round to 1 decimal place), if the drag force is given by the equation Fa = -kv. Where u denotes the boat velocity and k = 100 kg/s. Problem 4 (25 pts) Block B in figure (right) has the mass of 50 kg. The Knot coefficient of static friction between the block and the table is 0.25; an angle 0 is 30; assume that the cord B between B and the knot is horizontal. TITTY Find the maximum mass of block A (kg, round to 1 decimal place), for which the system will be stationary. Assume g = 9.8 m/s