Answered: An object of mass m=2 kg placed on a…

An object of mass m=2 kg placed on a rough horizontal surface is given an initial speed of 9m/s and comes to rest after covering a distance d=12m. The kinetic friction f k is equal to:

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)...

See similar textbooks

Similar questions

A crate of mass mm is initially at rest at the peak of an inclined plane which has a height of 4.43m4.43m and makes an angle of θ=24.2 with respect to the horizontal. After it has been released, it is found to be traveling at v=0.99m/s a distance d after the end of the inclined plane, as shown. The coefficient of kinetic friction between the crate and the plane is μp=0.1, and the coefficient of friction on the horizontal surface is μr=0.2. a.-Find the distance, d, in meters.
A person is sitting on a toboggan at the top of 23.7 m hill. If the person and toboggan have a total mass of 37.3 kg, determine how fast they will be going when they reach the bottom of the hill. Assume there is no friction.
A car traveling at 22 m/s runs out of gas while traveling up a 200 slope. How far up the hill will it coast before starting to roll back down? Assume that car rolls without friction.
In February 1955, a paratrooper fell 360 m from an airplane without being able to open his chute but happened to land in snow, suffering only minor injuries. Assume that his speed at impact was 52 m/s (terminal speed), that his mass (including gear) was 80 kg, and that the force on him from the snow was at the survivable limit of 1.2 x 105 N. (a) What is the minimum depth of snow that would have stopped him safely? m (b) What is the magnitude of the impulse on him from the snow? kg-m/s
A wood block weighing 1kg slides upward on a ramp with an initial velocity of 20m/s at point Aalong the ramp. What is the maximum height from point A can the ramp go if the ramp isinclined at 25 degrees and the coefficient of friction is 0.2 between the ramp and the woodblock.
A small block slides at a speed von a horizontal surface. Knowing that h=04 m, determine the required speed of the block if it is to leave the cylindrical surface BCD when 0 = 35". The required speed of the block to leave the cylindrical surface is m/s
A crate of mass m is initially at rest at the highest point of an inclined plane which has a height of 5.28 m and makes an angle of A = 17.2° with respect to the horizontal. After it has been released, it is found to be traveling at v = 0.29 m/s a distance dafter the end of the inclined plane, as shown. The coefficient of kinetic friction between the crate and the plane is tp = 0.1, and the coefficient of friction on the horizontal surface is f4r = 0.2.
A child and sled with a combined mass of 32.4 kg slide down a frictionless hill, starting at the top. The sled starts from rest and acquires a speed of 6.9 m/s by the time it reaches the bottom of the hill. What is the height (in m) of the hill?
You went on a drive late at night after having a fun party with the member of your company when you accidentally hit another car. The investigator observes a skid marks 25m long left by your 1500kg car. Your car skidded to stop on a concrete highway having a coefficient of kinetic friction with the tires of 0.80. Estimate your car's speed at the beginning of the skid?
6) Z. A thin non-condu cting rod of ma ss m and length L = 60cm, slides frictionl essly at a constant speed V = 0.5 m/s along the rails placed on the surface and at the edges of an inclined plane with the effect of an external force. The rails at the edges of the inclined plane are connected with each other via the rail at the bottom edge of the plane, so the rod and rails forms a rectangular closed loop as seen in the figure. The plane of the rails makes an angle 0 = 55° with the horizontal plane (xz plane). Before sliding, the rod stays at the di stan ce S = 4m measured from the bottom edge of the inclined plane. The inclined plane and the rod are under the effect of a uniform magnetic field given by B = 0.40î + 3ĵ + 0.8k(T). After the rod starts to slide, what will be the magnetic flux passing through the surface formed by the rod, the rails at the edges, and the rail at the bottom edge of the inclined plane at t=4s? A) 1.50 Wb B) 7.53 Wb C) 0.083 Wb D) 0.147 Wb E) 1.67 Wb
A student releases a 3.9kg cart from the top of ramp and starts a stopwatch. The length from the front of the cart to the end of the ramp and the distance from the end of the ramp to the stopper are shown. Neglect backwards friction and drag and assume the cart does not lose speed transitioning from the ramp to the floor. What is the cart's acceleration on the ramp? unit | (magnitude) What is the cart's acceleration on the floor? 130cm unit (magnitude) How long does the cart take to reach the end of the ramp? 5° 200cm unit (timed from the release) How fast is the cart traveling as it hits the stopper? unit How long does the cart take to reach the stopper? unit (timed from the release) cannot be detern check answers challenge ne Calculator ound = 343m/s cant figures Rain to stop e here to search ACC t;320
A constant applied force F, of 11.0 N pushes a box with a mass m = coefficient of kinetic friction between the box and the floor is 0.110. 6.00 kg a distance x = 15.0 m across a level floor. The m Assuming that the box starts from rest, what is the final velocity vf of the box at the 15.0 m point? Uf = m/s If there were no friction between the box and the floor, what applied force Fnew Would give the box the same final velocity? Fnew N