A champion athlete can produce one horsepower (746 W) for a short period of time. If a 70-kg athlete were to bicycle from the bottom to the top of a 254-m high mountain while expending power at the rate of 532 Watts, she would take at least how many seconds to reach the top.

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Q: .An advertisement claims that a certain 1300 kg car can accelerate from rest to a speed of 25 m/s in…

A: Please see the answer below

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…

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Q: Using 1000. J of work, a small object is lifted from the ground floor to the third floor of a tall…

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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: I have a motor that is rated for 6000 W. What is the maximum amount of work that the motor can do in…

A: Given data The power of the motor is P = 6000 W The time taken to work is t = 10 s The mass of the…

Q: A child pulls on a wagon with a force of 75 N. If the wagon moves a total of 30 m in 2.0 min, what…

A: Given , Force = 75 N Displacement s = 30 m Time = 2 minutes

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: A top fuel dragster with a mass of 600.0 kg starts from rest and completes a quarter mile (402 m)…

A: Given: mass of top fuel dragster, m = 600 kg Initial speed, u = 0 (starting from the rest) Final…

Q: How far must you stretch a spring with k = 1000 N/m to store 200 J of energy?

A: It is given that,

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A: Work done will be equal to change in the potential energy of the bucket. Let the potential energy at…

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

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Q: The box has a mass of 50 kg and is at rest. When it is pulled with 1000 N it reaches speed of 5m/s.…

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Q: 50 kg object was raised to a height and gained a potential energy of 1212 J. What was the height…

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Q: A bird of mass m = 2kg flies at a height h = 10 m from the ground with a constant horizontal speed v…

A: The mass of the bird, m=2 kg   The height, h=10 m   The horizontal speed, v=10 m/s

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A: potential energy only due to position  = m g h according to law of conservation of energy loss in…

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A: Given: The mass of the block is 13 kg. The constant speed of the object is 1.3 m/s. The coefficient…

Q: A 2000 kg car with a 250 HP (1.865 X 105 W) engine accelerates from rest. If all the engine’s power…

A:

Q: How much work must you do to push a 12 kg block of steel across a steel table at a steady speed of…

A: mass of block of steel (m) = 12 kg constant speed (v) = 1.3 mstime (t) = 7.7 seconds μk = 0.6

Q: A boulder with a mass of 25 kilograms slides 30 meters to the right while experiencing a rightward…

A: given that mass of boulder = 25 kg  distance covered = 30 m force applied = 150 N Time taken= 5.48…

Q: At Schlitterbahn, a 75.0 kg person rides a 12.0 m high water slide. If dissipative forces do -6.25 x…

A: Given m=75kg h=12m Ed=-6.25*10^3J To find the velocity at the bottom of the slide :

Q: A belicopter with mass m 3250 kg is cruising at a speed of 56.9 m/s at an altitude of 185 m. What is…

A:

Q: A cheetah can accelerate from rest to 7.4 m/s (about 17 m/h) in 1.1 seconds. How much average power…

A: The correct choice of answer is option (a) i.e. 1300 W

Q: An airplane of mass 4500 kg is cruising at a speed of 49.0 m/s at an altitude of 175 m. What is its…

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Q: Using 1000. J of work, a small object is lifted from the ground floor to the third floor of a tall…

A: Given parameter                        Work(W) = 1000J                        Time (T) = 20s

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Q: An electric engine in a 2.0 kg remote-control toy car has a power output of 4.0 W. How fast will it…

A: Mass of engine = 2 kg  Power output = 4 W  Time = 5 seconds

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…

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A: Let Pout be the total power output of the engines, P is the power used to push the ship through the…

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Q: 50.0kg marathon runner runs up the stairs to the top of a 443m tall tower. To lift herself to the…

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Q: A bodybuilder lifted a 1000 N weight 20 cm above his head as shown in the figure below. The athlete…

A: Given, weight, mg = 1000 Ndistance above his head, h = 20 cmheight of the bodybuilder, L =180 cmg =…

Q: What average mechanical power (in W) must a 72.0 kg mountain climber generate to climb to the summit…

A: Given :      Mass of the climber, m = 72 kg      Height of the hill, h = 345 m      time taken, t =…

Q: It requires 76 J of work to stretch an ideal very light spring from a length of 0.45 m to a length…

A:

Q: 12. A person runs up a long flight of stairs in 10 seconds. If the person’s weight is 600 N and the…

A: Given data The time taken by the person is t = 10 s. The person weight is W = 600 N. The vertical…

Q: A 2000 kg car with a 250 HP (1.865 X 105 W) engine accelerates from rest. If all the engine’s power…

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Q: A 65g Frisbee is thrown from a point 1.20 m above the ground with a speed of 12.00 m/s. When it has…

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Q: A 172 g box slides up a 17.3* ramp at a speed of 3.55 m/s. Using conservation of energy and assuming…

A: 12mv2=mgh=mglsinθl=v22gsinθ

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Q: What is the power output for a 60.0-kg woman who runs up a 3.00 m high flight of stairs in 3.50 s,…

A: The mass of the woman is m=60 kg. The height is h=3 m. The time is t=3.50 s. The final speed is vf=2…

Q: What is the kinetic energy of a m = 12kg package dropped from the top of the mountain, which is H =…

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Q: What minimum horsepower must a motor have to be able to drag a 450 kg box along a level floor at a…

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Q: What is the power output for a 60.0 kg person who runs up a 3.00 m high flight of stairs in 3.50 s,…

A: