A student who weighs 559 N climbs a stairway vertical height of 3.0 m in 28 s how much work is done? What is the power output of the student?

Q: In a time t=17.00 s, a 66.0-kg student runs at a steady pace up two flights of stairs whose combined…

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Q: A young boy pushes a cart with a force of 29 N directed at an angle of 25° below the horizontal. If…

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Q: A boy lifts a 100 N rock 1 m high. What work does he do in Joules? In ergs? The boy has to exert a…

A: Given  weight of rock(w)=mg=100 N height(h)=1 m Required work done(w)=?

Q: A man pulls a 6 kg luggage along a level road for 12 m exerting a force of 15 N at an angle of 20…

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Q: A 64 kg student travels from the first floor to the fourth floor of a school (a height of 15 m).…

A: Calculate the total work did she do climbing the stairs. Work doneW=Massm×g×height(h)…

Q: A 90.0 kg man pushes on a 5.0 x 106 ton wall for 350 s but it does not move.  How much work does he…

A: Dear student The work done by any force is defined as: Work = Force × Displacement in direction of…

Q: A person pulled a 5.0-kg water bucket from the well with a height of 5.0 m in 15 s. What is the…

A: Power = work÷time Here, work = change in potential energy = mgH -0 ( ere we have taken bottom most…

Q: A package is pushed across a floor a distance of 150 feet by exerting a force of28 pounds downward…

A: The free-body diagram,

Q: How much work did the movers do (horizontally) pushing a 46.0-kg crate 11.8 m across a smooth floor…

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Q: The brakes of a truck cause it to slow down by applying a retarding force of 6610 N to the truck…

A: Given, Retarding force = 6610 N distance = 1100 m

Q: A boy of mass 40 kg climbs a vertical rope 8 meters in length in 12 seconds with constant velocity.…

A: Mass of boy= 40 Kg Time = 12 s Height gain= 8 m

Q: A student throws the same ball straight upward to a height of 7.50m. How much work did the student…

A: Work done(W) is given by:- W=mgh  Where, m=mass of the ball= g=acceleration due to gravity=9.8m/s^2…

Q: You pull a friend up a 60 m rocky slope, with a tension force in the rope of 450 N. The slope is…

A: we have given that, Distance for pulling is d=60m Also tension force is F=450N Let us suppose…

Q: A force of 160 N stretches a spring 0.05 m beyond its unstretched length. How much work (in J) must…

A: Given data The magnitude of the force is F = 160 N The unstrectched length of the string is xo =…

Q: How much work does it take to slide a crate 26 m along a loading dock by pulling on it with a 240-N…

A: Given data: Displacement (d) = 26 m Force (F) = 240 N Angle between displacement and force (θ) = 27°…

Q: The brakes of a truck cause it to slow down by applying a retarding force of 7380 N to the truck…

A: Work Done (W) = F*X Where,    F= force applied    X= displacement

Q: The brakes of a truck cause it to slow down by applying a retarding force of 2740 N to the truck…

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Q: A 100KG desk is pushed across a floor at a constant speed of 1 m/s. How much work must the employee…

A: Given data The mass of the desk is given as m =100 kg. The initial speed of the desk is given as u…

Q: How much work does the mover do

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Q: A weight lifter lifts a 380-N set of weights from ground level to a position over his head, a…

A: Step 1Work done by a body is given as the force applied on it over the distance travelled.For the…

Q: A person pulls a crate 41.3 meters along a horizontal floor by a constant force 118.4 N, which acts…

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Q: Suppose your mass is 83.5 kg and you climb 40 stairs of height 18 cm in 16.0 s. What is your power…

A: (given)                             Mass = 83.5 kg                           Total distance =…

Q: A truck hitched to a trailer exerts a horizontal net force of 906 Newtons. If the trailer moves a…

A: Given data:          Net force ( F ) = 906N          Distance ( d ) = 1237 m Formula :          Work…

Q: a 75.8 kg person runs up a flight of stairs having a rise of 5.3 m in a time of 4.5 s. What average…

A: Given data: Mass (m) = 75.8 kg Height (h) = 5.3 m Time (t) = 4.5 s Required: The average power (P)

Q: A boy pushes a spring with maximum force of 75 N, compressing it 2.0 cm. How much work does the boy…

A: Given data: Applied force (F) = 75 N Compression or displacement (d) = 2.0 cm…

Q: A boy throws a ball of mass 0.23 kg straight upward with an initial speed of 26 m/s. When the ball…

A: The initial and the final heights of the ball are the same. So, the change in mechanical energy will…

Q: if a man lifts a 20-kg bucket from a well and does 6 kj of work , how deep is the well ? assume the…

A: Given: The mass of the bucket is 20 kg. The work done is 6 kJ.

Q: A student who weighs 545 N climbs a stairway (vertical height of 4.3 m) in 30 s. What is the power…

A: The work done by the student is,

Q: A 5.3 kg textbook is raised a distance of 35.2 cm as a student prepares to leave for school. How…

A: GivenMass m = 5.3 kgHeight h = 35.2 cm = 0.352 m

Q: A child drags a toy behind him on the ground. The coefficient of friction is 0.44 and the toy is…

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Q: If a spring has a spring constant of 400 N/m, how much work is require to compress the spring 1.0 m…

A: Given data: The spring constant is k=400 N/m. The compression in spring is x=1.00 m.

Q: A student lifts a 900 N bar (200 lbs) 0.5 m in 2.0 seconds. What is the work done by the student on…

A: Given: The weight of the bar is 900 N. The displacement is 0.5 m. The time duration is 2.0 s.

Q: A 33.00 kg block starts from rest at the top of a 23.0 m long 30.0° incline. Its kinetic energy at…

A: Working formula Work done by friction=Potential energy of the block at the top - Kinetic energy of…

Q: A person pulls a crate 41.3 meters along a horizontal floor by a constant force 118.4 N, which acts…

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Q: A person pulls a crate 46.6 meters along a horizontal floor by a constant force 105.4 N, which acts…

A: constant force = F = 105.4 N angle = 37.5 degrees frictional force = f= 50.6 N

Q: A bodybuilder lifts a 350 N set of weights from ground level to a position over his head, a vertical…

A: Step 1Work done by a system iswhere F is the force and d is the distance travelled by the system

Q: The brakes of a truck cause it to slow down by applying a retarding force of 7760 N to the truck…

A: Given data:  Force (F) = 7760 N Distance (d) = 868 m Required: The work (W)

Q: A body having 7 kg of mass moves with a velocity of 20 m/s covers a vertical height of 8.75 m. What…

A: Given data:  Mass, m = 7kg   velocity, v = 20m/s   Height, h = 8.75m   g = 10m/s2

Q: A boy of mass 45 kg climbs a vertical rope 9 meters in length in 15 seconds with constant velocity.…

A: Power output is force × velocity. Velocity =9m/15s = 0.6m/s

Q: What is the average power supplied by a 60 kg person running up a flight of stairs a vertical…

A: The person’s average power can be determined as, Here, W and t represent the work done and the…

Q: A body having 7 kg of mass moves with a velocity of 20 m/s covers a vertical height of 8.75 m. What…

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Q: A crane lifts a load of 6000 N through a vertical distance of 15 m in 30 s.What is the average…

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Q: A man pushes a lawn mower on a level lawn with a force of 193 N. If 51% of the force is directed…

A: We know that work done W=Fd

Q: A medical student pushes a 30-kg carton of books across the floor of her dormitory at constant speed…

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Q: A 150 pound man runs up a stairway 20 feet above ground level in 15 s.  How much work did the man…

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Q: A loaded grocery cart of mass 24.5 kg is pushed along an aisle by an applied force of 14.2 N [22.5o…

A: Given: The applied force is 14.2 N. The mass of the object is 24.5 kg. The angle between applied…

Q: A person pulls a crate 43.6 meters along a horizontal floor by a constant force 116.5 N, which acts…

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Q: A weightlifter raises a 150-kg barbell from the floor to a height of 2.2 m in 0.80 s. What is his…

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Q: A 78 kg student runs up the stairs of a football stadium to a height of 12.5 m above the ground in…

A: Given : mass of the student, m=78 Kg height, h=12.5 m time taken to climb, t=15 s   Power : Power is…