You are on an unknown planet with an unknown acceleration due to gravity. In order to measure the acceleration due to gravity, you decide to drop the Keyes to your spaceship from a height of 3.25m, if it took 5.05s for them to hit the surface of the planet, what is the acceleration due to gravity

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?