*84.|A 63-kg skier coasts up a snow-covered hill that makes an angleof 25° with the horizontal. The initial speed of the skier is 6.6 m/s. Aftercoasting 1.9 m up the slope, the skier has a speed of 4.4 m/s. (a) Find thework done by the kinetic frictional force that acts on the skis. (b) What isthe magnitude of the kinetic frictional force?

Given: Mass of the skier = 63 kg Distance traveled = 1.9 m Angle of inclined plane = 250Initial…

Answered: *84. |A 63-kg skier coasts up a…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Similar questions

5000 kg dump truck has a maximum 400 hp (1 hp= 746 W), and it is moving up on an inclined road witha slope of 15 degrees. If the frictional coefficient on the road is 0.80, what is the max constant speed that thetrucker can maintain on the inclined?
3
10. A force is applied along the x-direction on a 5.00 kg object. The force varies along its path as shown in the graph. It lasts for 0.50 minute. Find (a) the net work done by the force on the object and (b) the average power the force delivered during that time. (N)칩 (u)x 10. -5 -10
5. A person pulls an object of mass 40 kg as far as 20 m above a flat floor at a constant speed. The force used is directed 370 upwards horizontally. The coefficient of kinetic friction of the object with the floor is 0.20. Determine the work by the person, the work by the frictional force, and the total work on the object.
6. A person pushes a shovel into the ground to do some spring gardening. He applies force to the shovel over the following displacement. Force (N) Distance (cm) 0.0 0.0 4.0 2.0 8.0 4.0 12.0 6.0 (a) Draw a graph to represent the situation. | (b) Calculate the work donc by the man on the shovel over the 6.0 cm.
6. One end of a light inextensible string is attached to a block. The string is used to pull the block along a horizontal surface with a speed of 2 m s−1. The string makes an angle of 20° with the horizontal and the tension in the string is 25 N. Find the work done by the tension in a period of 8 seconds.
4.a) A constant force, F = 20 N, acts in the +x-direction and pushes an iceboat with mass m = 50 kg for a distance Δx = 40 m across a frictionless frozen lake. How much work was done by the force?
A cart loaded with bricks has a total massof 20.5 kg and is pulled at constant speed bya rope. The rope is inclined at 20.7◦ degrees above the horizontal and the cart moves25.2 m on a horizontal floor. The coefficientof kinetic friction between ground and cart is0.274.The acceleration of gravity is 9.8 m/s2.How much work is done on the cart by the rope?Answer in units of kJ.
A box with a mass of 5.5 kilograms moved a distance of 6m to the right. A tension of 63 Newtons by a rope was used to pull it and the angle with respect to the horizontal axis is 33.5 degrees. The coefficient of kinetic friction is 0.23. What is the total work done? A) 240.83 Joules B) 288.78 Joules c) 255.67 Joules D) 275. 23 Joules
A 5,000 kg airplane at rest reaches a take-off speed of 75 m/s after accelerating down a horizontal runway for 1.25 km. Calculate the average acceleration and average net force exerted on the airplane. For this problem Draw an Energy Bar Chart to solve the problem using the Work-Energy Theorem. W = ½ mv^2 - ½ mvo^2
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