A large cruise ship of mass 6.60  107 kg has a speed of 10.4 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? (Include the sign of this value.) ____________J (c) What is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.40 km? ___________N

An 8.10 kg package in a mail-sorting room slides 2.30 m down a chute that is inclined at 51.8 degrees below the horizontal. The coefficient of kinetic friction between the package and the chute's surface is 0.44.   Part A- What is the net work done on the package?Express your answer in joules.   Part B-Calculate the work done on the package by gravity. Express your answer in joules.   Part C-Calculate the work done on the package by the normal force.Express your answer in joules.   Part D- What is the net work done on the package? Express your answer in joules.

A mechanic pushes a 2480-kg car from rest to a speed of ?v, doing 4.66e3 J of work in the process. During this time, the car moves 25.7 m. (Neglect the friction between car and road.) (a) Find ?v.  m/s ( ± 0.02 m/s) (b) Determine the horizontal force exerted on the car.  N ( ± 2 N)

A factory worker moves a 23.0 kgkg crate a distance of 4.50 mm along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic friction between the crate and the floor is 0.300.   What magnitude of force must the worker apply?   How much work is done on the crate by the worker's push?   How much work is done on the crate by friction?   How much work is done by the normal force and by the gravity?   What is the net work done on the crate?

0 Question 3 A block of mass m = 1 kg is sliding on a horizontal surface with initial velocity vo = 2 m/s. The block is brought to a stop by kinetic friction in a distance of 4 m. What is the work done by the force of friction acting on the block? 2J O-0.5 J O-2 J 08 J 0.5 J O-8 J 1 pts Question 4 1 pts

A 12.0 kg box is given an initial push that starts it sliding across the floor. It eventually comes to a stop. If the box has an initial velocity of 3.5 m/s, how much work is done by friction to cause it to come to a stop? (Yes, you are correct, you do not know the coefficient of friction.)

Please solve and answer the question correctly. Thank you!

A dog (of mass 50 kg) is happily sliding down a hill that has a coefficient of kinetic friction of 0.2. The hill has a slope of 20 degrees. Assuming that the dog is letting gravity do all the work, what is the magnitude of the dog's acceleration down the slope? 0.51 O 3.51 O 2.51 1.51 600

A small boat is crossing a lake on a windy day. During some interval of time, the boat undergoes the given displacement Af = (3.21 m) î + (2.71 m)ĵ During the same interval of time, the wind exerts the given constant force F on the boat. F = (269 N)î – (131 N)ĵ What is the total work done on the boat by the wind over this period of time? work: J What is the angle between the direction of the wind force and the direction of the boat's motion during this time interval? angle:

A small boat is crossing a lake on a windy day. During some interval of time, the boat undergoes the given displacement A7. A7 = (3.17 m) î+ (2.77 m)ĵ During the same interval of time, the wind exerts the given constant force F on the boat. F = (277 N)î (125 N)ĵ What is the total work done on the boat by the wind over this period of time? work: What is the angle between the direction of the wind force and the direction of the boat's motion during this time interval? angle: J