(a) A block of mass 13.6 kg is sliding at an initial velocity of 4.65 m/s along horizontal surface right. The surface has a coefficient of kinetic friction of 0.254. How far will it slide before coming to rest? Calculate the time it takes to come to rest? (b) A motorcycle and a truck are both moving in the same direction in adjacent lanes on a highway. Mass of the truck is 8 times that of the motorcycle. At a particular truck instant, the speed of the motorcycle is four times as motorcycle 4v large as the speed of the truck v. Calculate the ratio of kinetic energies of the motorcycle and truck. Calculate the ratio of momentum of the two bodies.

Q: A heavy sled is being pulled by two people, as shown in the figure. The coefficient of static…

A: Given that:The coefficient of static friction between the sled and the ground, μs=0.571The…

Q: 5.6 kg desk is being pushed along a classroom at a constant speed of 0.5 m/s. If a force of 34 N is…

A:

Q: A box with a mass of 8.80 kg slides up a ramp inclined at an angle of 28.3° with the horizontal. The…

A: The free body diagram is shown below: According to the work-energy theorem, the equation can be…

Q: girl has a 14 kg wagon. If she pushes from behind at an angle of the 30 degrees with a force of 60…

A: girl has a 14 kg wagon. If she pushes from behind at an angle of the 30 degrees with a force of 60…

Q: The coefficient of static friction between a block and a horizontal floor is 0.47, while the…

A: Given data The block mass is: m = 4.2 kg The coefficient of static friction is: μs = 0.47 The…

Q: A 10 kg box is motionless on the floor. If the coefficient of static friction is 0.4 and the…

A: Given data: Mass of the box = m= 10 kg Coefficient of static friction =μs=0.4 Coefficient of kinetic…

Q: Consider a large truck carrying a heavy load, such as steel beams. A significant hazard for the…

A: The load can remain at one place only by the force of friction, so the force of friction and the…

Q: A woman exerts a horizontal force of 109 N on a crate with a mass of 38.7 kg.   (a) If the crate…

A: Here, the free body diagram shows the horizontal force as FH  and  fs is the static friction, N is…

Q: A 12 N horizontal force pushes a block weighing 5.0 N against a vertical wall . The coefficient of…

A: a) The normal force on the block will have magnitude 12N. The force of static friction is given by,

Q: You managed to pull a heavy crate up a ramp on a truck. The crate has mass 47 kg. You were pulling…

A:

Q: Two sheets of plywood A and B lie on the bed of the truck They have the same weight W, and the…

A: Solution:Given:Plywood sheet A is placed over the plywood sheet B. Thus plywood sheet B is resting…

Q: A particle, which remains at rest, is acted on by three forces F, G and H. The force F has…

A:

Q: A desperate hiker has to think fast to help his friend who has fallen below him. Quickly, he ties a…

A:

Q: The coefficient of kinetic friction between a 40 kg crate and the warehouse floor is 60 % of the…

A: The normal reaction acting on the crate will be: Therefore, the kinetic frictional force acting on…

Q: A box of mass 5.4 kg is given an initial speed of v0 = 7.1 m/s along a ramp as indicated in the…

A:

Q: a bridge across a small stream is made by supporting a 10m long log with a mass of 75kg with ropes…

A: Let the mass of the log is M and the mass of the child is m. For y direction the torque equation is…

Q: A horizontal force of 800 N is needed to overcome the force of static friction between a level floor…

A: The magnitude of horizontal force F=800 N The mass of the crate m=200 kg The acceleration due to…

Q: Question 9. Traveling at a speed of 16.1 m/s, the driver of an automobile suddenly locks the wheels…

A: The initial speed is The coefficient of the kinetic friction is The time is t = 1.21 sLet the speed…

Q: Two children are pulled on a sled over snow-covered ground. The sled is pulled by a rope that makes…

A: Given:Combined mass of children, mc = 45 kgmass of the sled, ms = 5.0  kgtotal mass the the…

Q: For the next three items: A 200 kg plank is projecting a distance L = 5.0 m from a wall which is…

A:

Q: A 1.57 kg mass is sliding across a horizontal surface an initial velocity of 12.9 m/s i.  If the…

A:

Q: A truck with a mass of 750 kg is traveling along a wet road at 30.0 m/s The driver slams on the…

A: mass = 750 kg v = 30 m/s coefficient of kinetic friction = 0.5

Q: A 50-kg box is resting on a horizontal floor. A force of 250 N directed at an angle of 30.0° below…

A: Given: Mass of box m=50 kg Force F=250 N Angle made by force below horizontal is 30° Coefficient of…

Q: A particle, which remains at rest, is acted on by three forces: F, G & H. The force F has a…

A:

Q: A 2.03 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book…

A: Force(F) needed to keep the book at constant speed should be equal to the force of kinetic friction.…

Q: Two workers are sliding 390 kg crate across the floor. One worker pushes forward on the crate with a…

A: Given:- Two workers are sliding m= 390 kg crate across the floor. One worker pushes forward on the…

Q: 3.0 kg F 5.0 kg

A: (a) What is the minimum value of F needed to move the two blocks? (b) If the force is 10% greater…

Q: A crate is pushed across a horizontal surface by the applied force shown in the figure. The…

A: The magnitude of the force acting on the crate is F = 24.1 N. The angle of the applied force is…

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.