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? (No Response) 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.) (No Response) J (c) What is the magnitude of the constant force required to stop it as it undergoes a displacement of 2.00 km? (No Response) NA 7.80 g bullet is initially moving at 600 m/s just before it penetrates a block of solid rubber to a depth of 5.60 cm. (a) What is the magnitude of the average frictional force (in N) that is exerted on the bullet while it is moving through the block of solid rubber? Use work and energy considerations to obtain your answer. (No Response) (b) Assuming the frictional force is constant, how much time (in s) elapses between the moment the bullet enters the block of solid rubber and the moment it stops moving> (No Response)You are working for the Highway Department. In mountainous regions, highways sometimes include a runaway truck ramp, and you are asked to help with the design of such a ramp, A runaway truck ramp is often a lane of gravel adjacent to a long downhill section of roadway where trucks with failing brakes may need assistance to stop. Working with your supervisor, you develop a worst case scenario: a truck with a mass of 5.00 x 10* kg enters a runaway truck lane traveling at 32.8 my's. Assume that the maximum constant value for safe acceleration of the truck is -5.00 my/'s. Any higher magnitude of acceleration increases the likelihood that semi-trailer rigs could jackknife. Your supervisor asks you to advise her on the required length (in m) of a runaway truck lane on a flat section of ground next to the roadway. (No Response)In order to increase the amount of exercise in her daily routine, Tara decides to walk up the three flights of stairs to her car instead of taking the elevator, Each of the steps she takes are 18.0 om high, and there are 12 steps per flight. (a) If Tara has a mass of 69.5 kg, what is the change in the gravitational potential energy of the Tara-Earth system (in J) when she reaches her car? (No Response) J (b) If the human body burns 1.5 Calories (6.28 x 10]) for each ten steps climbed, how much energy (in J) has Tara burned during her climb? (No Response) J (c) How does the energy she burned compare to the change in the gravitational potential energy of the system? Eburned = (No Response) AU