A large cruise ship of mass 6.00 x 10? kg has a speed of 12.8 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 2.20 km? N

An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. The asteroid has a mass of 3.5× 104 kg, and the force causes its speed to change from 7100 to 5400m/s. (a) What is the work done by the force? (b) If the asteroid slows down over a distance of 1.8× 106 m determine the magnitude of the force. (a) Work = Choose your answer for sign in part (a) here                                                             Type your answer for part (a) here Choose your answer for units in part (a) here                                                             (b) F = Type your answer for part (b) here Choose your answer for units in part (b) here

An archer pulls a bow string back 0.40 m by exerting a force that increases linearly from zero to 460 N.  How much work does the archer do?

A large cruise ship of mass 6.80 x 107 kg has a speed of 11.6 m/s at some instant. (a) What is the ship's kinetic energy at this time? J (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.) J (c) What is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.80 km? N