The speed of a block moving on a horizontal frictional surface changes from vi = 15 m/s to vf = 12.5 m/s in a distance of d = 9.5 m. How long in seconds did it take for the block to slow by this amount, assuming the acceleration is constant? If the block has a mass of 1 kg, What is the power supplied to the block by friction? What is the coefficient of kinetic friction between the block and surface μk?

Q: Consider a spring-block system on a frictionless floor as shown below. The position of the object is…

A: Given data: The equation of the position of the object is x=9t-7t2+0.7t3 The spring constant is…

Q: A 710 kg car drives at a constant speed of 23 m/s. It is subject to a drag force of 500 N. What…

A: Given,mass of the car, m = 710 kgspeed of the car, v = 23 msdrag force, F = 500 Nslope of the…

Q: A 4.23 kg bundle starts up a 22.4° incline with 103 J of kinetic energy. How far will it slide up…

A: The expression from work energy theorem,

Q: A brick lies perilously close to the edge of the flat roof of a building. The roof edge is 50 ft…

A: when an object of mass m is lifted by height h above the ground then its potential energy increases…

Q: A 15.1-kg box is being pushed from the bottom to the top of a frictionless ramp. When the box is…

A: Write the given values with the suitable variables. m=15.1 kgW=58 Ju=0 m/sv=1.50 m/s Here, m, W, u,…

Q: A pushing force of magnitude Fpush from x-0 to x=8.92. If A=2.98 and C=0.0733, and this pushing…

A: The pushing force has a form given by F=Ae-CxIn order to find the force required to push the object…

Q: A package with a mass of 40.0 kg slides down a smooth ramp with negligible friction. The package…

A:

Q: A book starts at rest.  If Fa=20.0 N, the mass of the book is 3.00 kg, θ=30º and d = 6.2 m,…

A:

Q: force is equal to the weight w=mg

A:

Q: The acceleration of a 2.00 kg object is shown below.  If as=6.0 m/s2, and the object starts from…

A: Given, Acceleration vs distance graph

Q: A brick lies perilously close to the edge of the flat roof of a building. The roof edge is 50 ft…

A: The potential energy of a mass M at a height h above the ground is given by, U = Mgh Where, g = 32.2…

Q: In 1.86 minutes, a ski lift raises four skiers at constant speed to a height of 141 m. The average…

A: Given data:  A ski lift raises four skiers at constant speed  Time (t) = 1.86 min Height (h) = 141 m…

Q: An 82.0 N box is pulled 24.0 m up a 30° incline by an applied force of 96 N that points upward,…

A:

Q: An energy diagram for a system is shown. The system has a total energy of E1. T/F? the object will…

A: An energy diagram in the figure where the system has a total energy E1Out of the given statements we…

Q: A ball is released from a height of 11 mand weighs 83 N. What is the magnitude of the total change…

A: The change in gravitational potential energy with change in height from ground can be expressed as;…

Q: A 10 kg mass is released from rest from the top of a 2 m long ramp, inclined at 30°. The speed of…

A: 7) work done by the friction = final kinetic energy - initial potential energy W = (1/2)(10)(2)2 -…

Q: In the arrangement of the first figure, we gradually pull the block from x = 0 to x = +3.0 cm, where…

A:

Q: Points A and B are 5.0 m apart.  The force indicated by the arrow acts on the block with a magnitude…

A: Here work done by the applied force is W= Force applied×displacement=2×5=10 Joule Work done by the…

Q: A man returning from ice fishing trip pulls a sled with fish. Total mass of the sled and fish is…

A:

Q: A block of mass m is pushed at constant speed over the horizontal ground. If the kinetic friction…

A: Given data, Mass of the block = m displacement = s coefficient of kinetic friction=μ

Q: Hk(X)=0.04x+0.1, where x is in meter. What is the work done by the friction force while the block…

A: Given: Mass (m) = 6.2 kg Angle of inclination (ϴ) = 300   The free-body diagram is shown as,…

Q: An assistant fills his cart with items to be stacked on the racks of a supermarket. The cart and the…

A: Since you have asked multiple sub-parts, we will solve first three sub-parts for you. To get…

Q: Suppose a 75-kg sprinter accelerates from rest to 12 m/s in 3.15 s. 1. What is the power output, in…

A:

Q: A cube with a mass of 2.5 kg slides down from the top of a frictionless ramp 1.5 m high. The ramp is…

A:

Q: A 2.5 kg cube glides down from the top of a 1.5 m high frictionless ramp. The angle of the ramp with…

A:

Q: The figure below shows the work performed on a box by a constant horizontal force as a function of…

A:

Q: A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional…

A: Write the given values with the suitable variables. m=78 kgh=11.4 mu=0 m/sWf=-6×103 J Here, m, h, u,…

Q: A student has to work the following problem: A block is being pulled along at constant speed on a…

A:

Q: It takes 1.09 J of work to compress a spring 11.1 cm. What is the force constant of the spring in…

A:

Q: A object of mass 3.00 kg is subject to a force Fx that varies with position as in the figure below.…

A: in this question  we use area of graph for work done because  work = F × d  it is what area of that…

Q: A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional…

A:

Q: A machine applies a force on a box of mass 5.00 kg. The force varies along its path as shown in the…

A: (a)   The net work-done on the box can be calculated as,

Q: A brick lies perilously close to the edge of the flat roof of a building. The roof edge is 50 ft…

A: Solution: Given: 1 ft = 0.3048 m h1 = height of roof of building = 50 ft = (50 x 0.3048) m = 15.24 m…

Q: A person pulls a 20 kg heavy box horizontally, which slides at a constant speed. The person makes a…

A: Given data: The mass of crate is m=20 kg. The maximum force applied is F=60 N. The distance traveled…

Q: A block of mass m = 3.1 kg is placed on a rough incline surface making an angle e = 13.5. with…

A: SOlution: Given that m = 3.1 kg angle = 13.5 degree coefficient of kinetic friction = 0.29

Q: The 50 kg block slides down the 2m high ramp. At some point, the block is .5 meters above the…

A: given: height of ramp h = 2m mass of block m = 50 kg height at point p h' = 0.5 m

Q: A 22kg crate is at rest on a ramp with an incline of 25 degrees. There is a coefficient of kinetic…

A: Given data: Mass of crate(m) = 22 kg Angle of incline (θ) = 25° Coefficient of kinetic friction (μk)…

Q: While riding on an elevator, a person has twoforces acting on him, a normal force and a gravity…

A: To determine,The magnitude of the normal force.Is the elevator speeding up or slowing…

Q: A chain is held on a frictionless table with one fourth hanging over the edge. If the chain has a…

A:

Q: A 7 kg block is moved up a 25 degree incline by a force of 69 N, parallel to the incline. The…

A:

Q: A block of mass m is pushed at constant speed over the horizontal ground. If the kinetic friction…

A: the force applied is at an angle θ, so force is resolved into its components, Fcosθ and Fsinθ along…

Q: A heavy box is pulled by a rope on a horizontal surface. (a) Assume that there is no frictional…

A:

Q: The rate of energy use in a typical house is about 2 kW. If the kinetic energy of a car (mass 1358…

A: Here given that,Rate of energy=  2kWThat means power=2kw=2000WTime,t=1min=60smass of car,m=1358kg