As shown below, two blocks of equal mass m are attached to a string that is part of a pulley system. One block is on a flat, horizontal surface while the other is on a surface inclined at an angle of 45°. If no friction is acting upon the system, the magnitude of the acceleration of the system is _.

Alarge cruise ship of mass 7.00 ✕ 107 kg has a speed of 11.6 m/s at some instant. (a) what is the ship's kinetic energy at this time? (b) how much work is required to stop it? (give the work done on the ship. include the sign of the value in your answer.) (c) what is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.00 km?