A horizontal force of 12 newtons is applied to a 4.0 kg box that slides on a horizontal surface. The box starts from rest, moves a horizontal distance of 10 meters, and obtains a velocity of 5.0 m/s. The surface has friction. The friction force, assumed constant is what?

Q: You are a member of an alpine rescue team and must get a box of supplies, with mass 3.00 kg , up an…

A: Analyze the diagram of the given situation. From work-energy theorem, Here, KEf and KEi represent…

Q: a 75 kg bodsled is pushed along a horizontal surface by two athletes. after the bobsled is pushed a…

A: The acceleration of the body can be calculated from the equation of motion a follows, v2=u2+2ad6…

Q: A 20 kg box is pushed on a flat horizontal floor with a frictional force of 5 N. How far will the…

A: mass of box = 20 Kg Frictional force = 5 N acceleration = - friction/mass  = - 5 /20  = - 0.25 m/s2…

Q: A 138-Newton horizontal force is exerted upon a 4.6 kg box to move it across a level surface at a…

A: Draw the free-body diagram of the object.

Q: Josh starts his sled at the top of a 3.0-m-high hill that has a constant slope of 25°. After…

A: Given, Josh starts his sled at the top = 3.0-m-high Constant slope = 25° Horizontal patch of snow =…

Q: A 1500N block is in contact with a level plane whose coefficient of kinetic friction is 0.10 If the…

A: Given: The weight of the block is 1500 N. The coefficient of kinetic friction is 0.1. The applied…

Q: A 7450kg car is travelling at 28.7m/s when the driver decides to exit the freeway by going up a…

A:

Q: The 1.5 kg physics book in figure is connected by a string to a 550 g coffee cup. The book is given…

A: Draw the free-body diagram of the book.

Q: A vehicle downhill with a slope of 0.15 and a drag factor of 0.7 leaves a skidmark of 20.6 meters,…

A:

Q: A 18-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 21 N.…

A:

Q: What initial velocity must a 1.35 kg block have to travel a distance of 2.09 m up an incline that…

A: mass = 1.35 kg d= 2.09 m angle = 22.10coefficient of kinetic friction = 0.359

Q: A warehouse worker exerts a constant horizontal force of magnitude 85 N on a 40 kg box that is…

A:

Q: Under the influence of its drive force, a snowmobile is moving at a constant velocity along a…

A: Given : m=150 kg F=204 N u=4.01 m/s

Q: the kinetic friction force that a horizontal surface exerts on a 60 kg object is 50 N. If the…

A: From Newton’s second law of motion.

Q: After one month of taking a literature class, a first-year Bard student decides to dispose of all…

A:

Q: *26. ao Under the influence of its drive force, a snowmobile is moving at a constant velocity along…

A:

Q: 3. A 6.0-kg initially at rest is pulled to the right along a frictionless, horizontal surface by a…

A:

Q: What is the height from which a car of mass m = 1270 kg must be dropped in order to acquire a speed…

A: Given data:  Mass (m) = 1270 kg Initial velocity (v0) = 0 m/s Final velocity (v) = 88.5 km/h…

Q: A snowboarder takes speed downhill in order to get up a hill without pushing. If he arrives at the…

A: Given : Velocity at bottom of hill = 60 km/h = 16.67 m/s Length of hill = 75 m Slope = 8 % Kinetic…

Q: A 5.5 kg block that is initially at rest on a frictionless horizontal surface was pulled with a…

A: Given data:  Mass (m) = 5.5 kg Force (F) = 3.8 N Initial velocity (v0) = 0 m/s Final velocity (vf) =…

Q: A 10 kg block with an initial velocity of 10 m/s slides 10 meters across a horizontal surface and…

A: Given information,mass of block, m=10kginitial velocity  , u=10m/sdistance , s= 10mtime ,  t=2sso…

Q: A box of mass 7.3 kg is slid along the floor. The initial speed of the box is 6 m/s and it comes to…

A:

Q: You are a member of an alpine rescue team and must get a box of supplies, with mass 2.90 kg , up an…

A:

Q: what is the speed as it leaves her foot traveling in the opposite direction?

A: According to Newton's Second law of motion , we can write that…

Q: A 10.2-kg box is sliding across a horizontal floor. It has an initial speed of 1.25m / s and the…

A: Given    A 10.2-kg box is sliding across a horizontal floor. It has an initial speed of 1.25m / s…

Q: An object moves with an initial speed of 5.01 m/s. It then enters a region with friction causing the…

A: Work done by the constant friction force is:Wfric = Ffricd = μFNdbut FN = mgTherefore, Wfric =…

Q: A hockey puck with mass 0.166 kg is pushed across the ice with a constant force of 0.89 N. The…

A:

Q: A 8.2 kg mass slides down a flat hill that makes an angle of 32 with the horizontal. If friction is…

A: Given data The mass is m = 8.2 kg The angle with the horizontal is θ = 32°

Q: A 46.0-kg crate was pushed 10.4 m across a rough floor without acceleration by two people, with an…

A: Frictional force is the opposing force formed between two surfaces that are trying to move in the…

Q: A 75-kg snowboarder has an initial velocity of 5.0 m/s at the top of a 28 degree incline. After…

A: Free body diagram is ∑Fy=FN-mgcosθ=0 FN=mgcosθ∑Fx=mgsinθ-Ffriction=ma ma= mgsinθ-μkFN…

Q: A 12 kg block sits on a ramp inclined at 11 degrees that has a coefficient of friction of 0.9. A…

A: Let the mass of the suspended weight be m and tension in the string be T.

Q: A constant applied force F, of 13.0 N pushes a box with a mass m = 6.00 kg a distance x = 15.0 m…

A:

Q: A 19-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 29 N.…

A: Given: Mass of sled (m) = 19 kg. Magnitude of horizontal force (F) = 29 N. Final speed of sled after…

Q: A 20-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 28 N.…

A:

Q: A 116-Newton horizontal force is exerted upon a 6.8-kg box to move it across a level surface at a…

A: Given Data Force is F = 116 N Mass is m=6.8 kg

Q: A 20-kg mass slides down a flat hill that makes an angle of 10° with the horizontal. If friction A)…

A:

Q: A 17-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 28 N.…

A: Here given a 17 kg sled is pulled by a horizontal force 28 N. From rest the sled attains a speed of…

Q: A truck with massm has a brake failure while going down an icy mountain road of constant downward…

A: The truck moves up a ramp . To find = distance the truck runs up the ramp .

Q: A flatbed truck on a horizontal road is loaded with a block whose mass M = 900 kg. Initially the…

A: Given: Mass of block, m=900 kg x=1 m Speed with which block accelerates, v=108 km/h =30 m/s Time,…

Q: A initial velocity of the object of mass 3.0 kg sliding on a rough surface with coefficient of…

A: In the question given value of mass of object coefficient of friction and initial velocity and we…

Q: A 1000 kg boat is traveling at 90 km/h when its engine is shut off. The magnitude of the frictional…

A: It is given that,

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A:

Q: A 75kg bicyclist (including the bicycle) is pedaling uphill with a speed increasing at a rate of…

A: Solution:-

Q: A box with a mass of 5.0 kg on a frictionless horizontal surface is pulled horizontally with a force…

A: Given : m = 5 kg F = 20 N vo = 0 because box is initially at rest t = 3 s

Q: A box of mass 2 kg is pushed by a force F = 50N against a fixed ceiling, as shown in the figure…

A: Given: The mass of the object is 2 kg. The applied force is 50 N vertically upward.

Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.