In climbing up a rope, a 78-kg athlete climbs a vertical distance of 6.0 m in 9.0 s.   What minimum power output was used to accomplish this feat? Express your answer to two significant figures and include the appropriate units.

Q: A 200 N box is pushed at a constant velocity up an incline that is 5.00 m long and rises 1 m. If the…

A: The Free Body Diagram of the 200 N box is shown below,   The Bos is being pushed at a constant…

Q: Bonny Blair of the United States set a world record in speed skating when she skated 5.00 x 10^2 m…

A: Kinetic energy is defined as energy due to virtue of its motion. Kinetic energy =12mv2 GIVEN : Mass…

Q: As part of a charity fund raising drive, a runner with mass 50.0 kg runs up the stairs to the top of…

A: Mass of the runner=50kgHeight=443macceleartion due gravity=g=9.8m/s2Increase in potential…

Q: A crane lifts a 650 kg beam vertically upward 9.6 m and then swings it westward 18 m. How much work…

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Q: Suppose 65 passengers with an average mass of 75kg are transported by a ski lift to a height of…

A: Given: The number of passengers: n = 65. The average mass of a passenger: m = 75 kg. The height…

Q: 4. In a time t=18.00 s, a 60.0-kg student runs at a steady pace up two flights of stairs whose…

A: Given data:  Time (t) = 18.00 s Mass (m) = 60.0 kg Vertical height (h) = 7.80 m Required: Power…

Q: How much power is required to lift a heavy solid concrete beam with mass 91.22 kg upward with a…

A: Given Mass =91.22 kg speed v =3.8 m/s

Q: A man manages to ride a bicycle (total mass 95 kg), 10 m/s from rest, up a hill 230 m high against…

A: Given:mass,m=95 kghigh,∆h=230 mspeed,v=10 m/sdistace,d=1500 mTime,t=6 minute=360 sec.Now,Total work…

Q: A 65-kg woman runs up a flight of stairs in 10.0 s. Her net upward displacement is 3.0 m.…

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Q: What average power does a 1,565 kg car need to go from 0 to 12.6 m/s in 6.86 seconds? Assume a…

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Q: A crane lifts a 650 kg beam vertically upward 10.8 m and then swings it westward 18 m. How much work…

A: The formula for workdone is W=Fxcosθ

Q: a = 1.2 ms? A Smart Car accelerates from rest as shown. 12. If the constant acceleration occurs over…

A: m=Mass of smart car=860 kga=Acceleraiton of car=1.2 m/s2s=Displacement of car=30 m

Q: A world-class sprinter running a 100 m dash was clocked at 5.4 m/s 1.0 s after starting running and…

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Q: A car with a mass of 900.0 kg climbs a 20.00° incline at a steady speed of 60.00 km/hr. If the total…

A: The steady speed of a car is, v=60 km/hr=16.67 m/s The total resistive or dissipative force acting…

Q: Suppose that as part of their training, the football players of MSU went up a stair in 66 s. The…

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Q: What average power is needed to lift a 65-kg vendor vertically upward at a uniform speed of 0.44…

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Q: A 40.0 kg jogger runs up the slope described in the fiqure. She maintains a constant speed of 4.00…

A: Given  Mass of jogger(m) = 40Kg Speed (s) = 4m/s

Q: A car's engine generates 120,000 W of power as it exerts a force of 12,000 N. How long does it take…

A: Force=12000 N Displacement=120 m Work done(W)=Force*Displacement=12000*120 J=1440000 J

Q: It takes a force of 1450 N to keep a 1300-kg car moving with constant speed up a slope of5.25°. If…

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Q: A girl weighing 400 N takes 3 seconds to run up a 4-m high stairs. Which of the following gives the…

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Q: A rare and valuable antique chest is being moved into a truck using a 3.000 m long ramp. The weight…

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Q: car (120 kg) accelerates from the rest to 25 m/sec in 11 sec, what is the value of the generated…

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Q: 11. A ball weighing 20 N is dropped from rest from a height of 8 meters above the ground. Assuming…

A: Total mechanical energy is the sum of kinetic energy and potential energy.

Q: Without pedaling, the rider rides down a 3.0% slope with constant speed of 7.0 m/s. With how much…

A: Slope = 3% therefore, θ = Tan-1(0.03) = 1.718oV = 7 msmass (m) = 80 kg

Q: How much work (in J) is required to move a box that weighs 13 kg upward by 65 cm? Use the fact that…

A:

Q: A football player is dragging a 100 kg sled across an Astroturf field at a constant speed of 5 m/s…

A: Mass is sled (m) = 100kg  Velocity (v) = 5m/s Tension in the rope is (F) = 500N

Q: Suppose a 925-kg car climbs a 2.05° slope at a constant speed of 30.5 m/s.   Calculate the power…

A: Since, the car climbs the slope with a constant velocity, the expression for the power required is,

Q: Calculate the average power necessary for a 55.8 kg person to run up a 5.0 m high, sloped hill, in…

A: The expression for the average power is P=Wt Here,P  is the average power,  iWs the work done by…

Q: car (m = 660.0 kg) accelerates uniformly from rest up an inclined road which rises uniformly, to a…

A: Given Mass of the car is m=660.0 kg Height of the hill is h=39.0 m Final speed of the car is vf=24.9…

Q: A force of 200 N displaces a body by 4 m, calculate the work done (in J). A) 40 B) 500 C) 80 D) 800

A: Given Data: The force applied is, F = 200 N. The displacement happened is, s = 4 m. The work is…

Q: Suppose a 825-kg car can produce a useful power output of 45.5 hp (1 hp = 746 W). How long, in…

A: a)Calculate the work done using work energy theorem.

Q: Suppose a 975-kg car can produce a useful power output of 42.5 hp (1 hp = 746 W). How long, in…

A: Data Given ,  Mass of the car ( m ) = 975 kg Power of the car ( P ) = 42.5 hp   = ( 42.5 × 746 ) W =…

Q: A bag of wheat weighs 200 kg. To what height should it be raised so that potential energy is 9800 J?…

A: Given data:  Mass (m) = 200 kg Potential energy (U) = 9800 J Acceleration due to gravity (g) = 9.8…

Q: To pass a slow-moving truck, you want your fancy 1.30 * 103@kg car to accelerate from 13.4 m>s…

A: Let E1 and E2 denote the initial and final kinetic energy of the car, E denote the change in kinetic…

Q: f the hand does 40 J of work on the 2.5 kg cart, how fast will it travel? If the person does 480…

A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…

Q: How much work must you do to push a 11.0 kg block of steel across a steel table (μk=0.6)at a steady…

A: a) The required work done is,

Q: A small motor runs a lift that raises a load of bricks weighing836 N to a height of 10.7 m in 23.2…

A:

Q: A new record for runningthe stairs of the Empire State Building was set on February 4, 2003.The 86…

A: The total height gained by the runner to run 1576 steps is:

Q: Suppose the vertical height of stairs you walk up is reduced by half. How would this affect the work…

A: Work done by a person of weight F=mg, to move a distance d  vertically or horizontally ,  is…

Q: Suppose the ski patrol lowers a rescue sled carrying an injured skiier, with a combined mass of 92.5…

A: Work done on an object by a force F is given as- W=F.d=Fd cosθ where,d is the displacemnt of objectθ…

Q: An 80-kg physics professor whose part of his daily exercise is walking through the stairs runs up…

A: Given data: Mass (m) = 80 kg Time (t) = 15 s Upward displacement (h) = 25 m Required: Power (P)

Q: What is her useful power output if she does 25 pushups in one minute?

A: It is given that,

Q: A crane lifts a 650 kg beam vertically upward 10.1 m and then swings it westward 18 m. How much work…

A: Here the workdone is only in upward direction. No workdone in horizontal direction.

Q: An initially (t = 0) stationary 2.0 kg object accelerates horizontally and uniformly to a speed of…

A: Solution

Q: Suppose a 825-kg car can produce a useful power output of 45.5 hp (1 hp = 746 W). How long, in…

A: