Integrated Concepts - A 75.0-kg cross-country skier is climbing a slope at a constant speed of 2.00 m/s and encounters air resistance of 25.0 N. Find his power output for work done against the gravitational force and air resistance. (b) What average force does he exert backward on the snow to accomplish this? (c) If he continues to exert this force and to experience the same air resistance when he reaches a level area, how long will it take him to reach a velocity of 10.0 m/s?

Q: A poor guy pulls a 10-kg luggage along a level boulevard for 5 m by exerting a force of 35N at an…

A: Given data: Mass of luggage is, m=10 kg. Distance travelled is, s=5 m. Magnitude of force is, F=35…

Q: Suppose the ski patrol lowers a rescue sled carrying an injured skiier, with a combined mass of 97.5…

A: Normal force on sled is mgcosθ Friction force: Substitute mgcosθ for  in above equation. Here; =…

Q: As a snowboarder descends a mountain slope, gravity, the normal force, and friction combine to exert…

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Q: A weight lifter lifts a 350-N set of weights from ground levelto a position over his head, a…

A: When the weightlifter lifts the weight with a constant velocity, the net force on the weights will…

Q: A body of mass 2 kg is initially at rest on a horizontal frictionless plane. It is then pulled 4…

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Q: When released from a height ofh3= 14.00 m, a 344.00 g block slides down the path shown below,…

A: given , height , h = 14.00 m mass of the block , m = 344 .00 g =0.344 Kg final speed , v = 11.00 m/s…

Q: How much work does gravity do on a 2.5-mg raindrop as the drop falls to the ground from a cloud 2200…

A: Answer              5.39*10-5 J

Q: If a 50 kg object initially at rest is displaced 25 m by a constant net force of 600 N in the…

A: Work done is equal to change in kinetic energy of the body . Work done = (Force)*(displacement)…

Q: Cite an example in which a force is exerted on an object without doing work on the object.

A: The work done will be zero when the applied force on an object is perpendicular to the displacement…

Q: A record for stair climbing was achieved by a man who raced up the 1600 steps of the Empire State…

A: Given data from question,  Number of steps = 1600 Height = 320m Time taken = 10.2min Weight of man =…

Q: A car has a drag coefficient Ca = 0.30, a frontal area of A = 1.9 m² , a mass 1.2 tonnes and a…

A: Write the expression for rate of work. Here, m represents the mass, g represents the acceleration…

Q: How much work is done against the gravitational force on a 25.0-kg suitcase when it is carried from…

A: Given: Mass of the suitcase (m) = 25 kg Height carried (h) = 380 m acceleration due to gravity (g) =…

Q: Sir Jaykel Cuenca, a royal engineer of the Aiheistdräg Kingdom, was tasked to determine an efficient…

A: Given: Mass M=50 kg Mass m=100 kg μk=0.4 θ=15° Incline height, h=5 m

Q: A 2-kg object moving on a horizontal frictionless surface with a speed of 4 m/s is brought to rest…

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Q: A 9.00-kg particle moves from the origin to position ©, having coordinates x = 4.50 m and y = 4.50 m…

A: We are allowed to give the explanation of first three subparts of a question only which is given…

Q: Find the work available for a car weighing 1290N, that travels 200. meters

A: 1)weight of car = 1290 N distance travelled = 200 m

Q: A 44.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 144…

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Q: Spiderman, whose mass is 74.0 kg, is dangling on the free end of a 12.2-m-long rope, the other end…

A: The work done by the gravitational force on the spider man in this maneuver is Wg=mg∆h=mgl-lcosθ…

Q: Suppose you drag a box 8.0 m across a horizontal floor, exerting a force of 90. N at 35 degrees…

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Q: Using energy considerations, calculate the distance the 65.0-kg baseball player slides,given that…

A: The initial kinetic energy of the system is

Q: How much work is done on a downhill skier by an average breaking force of 813 newtons to stop her in…

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Q: To clean a floor, a janitor pushes on a mophandle with a force of 50.0 N. (a) If the mop handle is…

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Q: Spiderman, whose mass is 78.0 kg, is dangling on the free end of a 12.4-m-long rope, the other end…

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Q: A 941 kg elevator carries passengers with combined mass of 455 kg as it ascends at constant speed of…

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Q: Find the work done in joules by gravity as an object of the mass m-12 kg is raised up at constant…

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Q: complete with camping equipment, has a mass of 85 kg In exactly 1.5 h, she climbs from an elevation…

A: Given mass = 85 kg Time t = 1.5 hr Height h1= 2700 m Height h2 = 3800 m

Q: Two objects are each displaced the same distance, one by a force F pushing in the direction of…

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Q: Find the work done in joules by gravity as an object of the mass m-8 kg is raised up at constant…

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Q: Describe a situation in which a force is exerted for a long time but does no work. Explain.

A: We consider a situation when an object lifted at height h is displaced a distance x.

Q: While training for breeding season, a 460 gram male squirrel does 29 pushups in a minute, displacing…

A: Given:- While training for breeding season, a 460 gram male squirrel does 29 pushups in a minute…

Q: A skier of mass 77 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to…

A: Distance for which he was pulled,d= 55m Angle of slope with horizontal= 30°

Q: A 0.14-kg pinecone falls 16 m to the ground,where it lands with a speed of 13 m>s. (a) With what…

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Q: How much work does Ryan do as he carries this bag of potatoes to his car, which is parked 45 m away?…

A: Given data:    Distance, d = 45 m

Q: Find his power output, in watts, for the work he does against the gravitational force and air…

A: a) Analyze the following figure. Since the skier is moving at a constant speed, its acceleration…

Q: Spiderman, whose mass is 80.0 kg, is dangling on the free end of a 12.0-m-long rope, the other end…

A: Mas, m = 80 kg  Length of rope, l = 12 m

Q: Given: A tennis ball of mass m = 0.063 kg is thrown straight up with an initial speed v0 = 7 m/s.…

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Q: A 55-kg marathon runner runs up the stairs to the top of Taguig’s 318-m Grand Hyatt Manila, the…

A: Mass of the runner M=55 kg The height reached h=318 m The time taken t=20 minutes=20×60 s=1200 s…

Q: What is the average useful power output (in w) of a person who does 6.80 x 106 J of useful work in…

A: Given: Work done by the person, W = 6.80 × 106 J time taken to complete it, t = 7.60 h = 7.60 h ×…

Q: On an essentially frictionless, horizontal ice rink, a skater moving at 5.0 m/s encounters a rough…

A: Work Energy Theorem: It states that the change in kinetic energy of the particle is equal to the…

Q: A 700 kg dragster accelerates from rest to a final speed of 120 m/s in 400 m (about a quarter of a…

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Q: A 10 kg block is pushed with a constant external force of 10 Newtons horizontally on a floor with a…

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Q: Suppose the ski patrol lowers a rescue sled carrying an injured skiier, with a combined mass of 77.5…

A: In this question we have to answer how much work, in joules, is done by the rope on the sled over…

Q: Suppose the Eskimo is pushing the same 50.0-kg sled across level terrain with a force of 51.0 N. (a)…

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