A girl on skateboard (total mass of 53.5 kg) is moving at 11.9 m/s at the bottom of a long ramp. The ramp is inclined at 18.9° with respect to the horizontal. If she travels 14.3 m along the ramp before stopping, what is the work done by the net frictional force in J on her? 1 docimal place

A 5.40-kg box rests on a horizontal surface. The coefficient of kinetic friction between the box and surface is µk 0.410. A horizontal force pulls the box at constant velocity for 23.0 cm. Find the work done by the applied horizontal force. Submit Answer Tries 0/10 Find the work done the frictional force. Submit Answer Tries 0/10 Find the work done by the net force. Submit Answer Tries 0/10

A box m = 81 kg is being pulled by a constant force F = 199 N at an angle of θ = 18 degrees. The initial speed of the box is zero. 1. Write an expression for the work done by force F as the block moves a horizontal distance d?   2.How much work, in joules, was done in moving the block 6.5 m?  3.What is the speed of the box at d = 6.5 m if the surface is frictionless?

4. A 4.7 kg block is pushed 3.1 m up a vertical wall with constant speed by a constant force of magnitude Fapplied at an angle 8=35° with the horizontal, as shown in the Figure. If the coefficient of kinetic friction between block and wall is 0.23, determine a) The work done by F, b) the work done by the force of gravity, c) the work done by the normal force between block and wall. d) By how much does the gravitational potential energy increase during the block's motion? F

A sled plus passenger with total mass 50 kg is pulled 20 m across the snow (uk = 0.20) at constant velocity by a force directed 25° above the horizontal. Calculate the work done by the applied force. %3D Answer:

The force on a particle is directed along an x axis and given by F = Fo(x/xo - 1) where x is in meters and F is in Newtons. If Fo = 1.2 N and Xo = 2.7 m, find the work done by the force in moving the particle from x =0 to x = 2xo m. Number i Units

A puck with a mass of 159.0 g is sliding with an initial velocity 31.0 m/s.  The puck enters a section of rough ice and slows to a speed of 15.1 m/s.  What is the magnitude of the work done on the puck by the rough ice?  Express your answer in Joules to 1 decimal place.

A 2kg package is moves up along a 10 m ramp AC inclined at 15' with an initial speed of 5 m/s. Knowing that the coefficient of sliding friction between the package and the incline is 0.2, answer the following questions: 10 m B 15° d 1. What force/s do/does NOT do any work on the package as it moves along the incline? 2. What is the work done by friction on the package as it moves a distance x along the incline? 3. What is the change in the kinetic energy from A to B if at position the package becomes zero? 4. What is the change in the potential energy from A to B if at position B the velocity of the package 5. What is the maximum distance that the package will move up the incline?

2. A cart is pulled a distance D on a flat, horizontal surface by a constant force F that actsat an angle θ with the horizontal direction. The other forces on the object during thistime are gravity (Fw), normal forces (FN1) and (FN2), and rolling frictions Fr1 and Fr2,as shown below. What is the work done by each force?

A crate with mass m = 33.3 kg being pushed up an incline that makes an angle φ = 22.7 degrees with horizontal. The pushing force is horizontal, with magnitude P, and the coefficient of kinetic friction between the crate and the incline is μ = 0.358. Consider the work done on the crate as it moves a distance d = 5.32 m at constant speed. a. What is work done by the pushing force, in joules?  b. What is the work done by friction, in joules?  c. What is the work done by gravity, in joules?  d. What is the net work, in joules?