How long will it take a 844-kg car with a useful power output of 48.5 hp (1 hp equals 746 W) to reach a speed of 14.7 m/s, neglecting friction? Give your answer in seconds and to 1 decimal place: A. 2.5 s B. 3.1 s C. 1.7 s D. None of the choices

Q: 15. What is the resistive force on a cyclist who has leg muscles of power 200 W each and who reaches…

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Q: 14. What is the total kinetic energy of an object that is 5 kg and moving 25 m/s due West? (2 pts.)…

A: Given  Mass (m) = 5 kg  Speed (v) = 25 m/s    Kinetic energy of the object  KE = (1/2) mv2

Q: A transport truck driving at a constant speed of 84.6 km/hr on a flat stretch of highway must…

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Q: A 1,000 kg sports car accelerates from 0 to 30 m/s in 13 s.  What is the average power of the…

A: Mass of the car,(m)=1000 kg ----(1) [Given] The initial velocity of the car,(vi)=0 m/sec ----(2)…

Q: Suppose that 3 J of work is needed to stretch a spring from its natural length of 24 cm to a length…

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Q: A transport truck driving at a constant speed of 83.7 km/hr on a flat stretch of highway must…

A: Given,  Speed of truck, v = 83.7 km/h Force required to overcome friction, F = 2,893 N Power…

Q: 9800 N car is traveling at 10 m/s along a horizontal road when the brakes are applied The car skids…

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Q: 8. Adult cheetahs, the fastest of the great cats, have a mass of about 70 kg and have been clocke…

A: To find: a)The amount of kinetic energy. b)The factor by which the kinetic energy will change if its…

Q: Q12: A time-dependent force F = 6t acts on a particle of mass 1 kg. If the particle starts from…

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Q: What average power would a 1500 kg speedboat need to go from rest to 25 m/s in 6 seconds if the…

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Q: Seems easy enough but not getting the correct answer 173684

A:

Q: 30. John is riding an elevator. If John notes that the elevator travels upwards with a speed of 0.23…

A: mass (m)=75 kg acceleration due to gravity(g)=9.8 m/s2 speed(v)=0.23 m/s

Q: A runner exerts a force of 334 N against the ground while running a distance of 50.Om. The runner's…

A: Force exerted, F = 334 N Distance walked, s = 50 m Power, P = 3.71 kW = 3710 W   Work done by the…

Q: 16. A 1500 kg car accelerates uniformly to a speed of 18 m/s in 4.59 seconds. Find the average power…

A: Given :    mass, m = 1500 kg    speed, v = 18 m/s    Time, t = 4.59 s We have, acceleration , a = vt…

Q: A transport truck driving at a constant speed of 83.3 km/hr on a flat stretch of highway must…

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Q: A 56.5-kg person is running and accelerates from 3.67 m/s to 8.29 m/s in 5.67 s. How much power does…

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Q: 4. How much power is needed to lift a 49 kg person a vertical distance of 5.0 m in 20.0s ? A 12.5 W…

A: GIVEN  mass of a person (m)=49 kg distance(d)=5m time=20 sec work done=(force)(displacement) here…

Q: It takes 212 kJ of work to accelerate a car from 21.7 m/s to 29.2 m/s. What is the car's mass?

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Q: How fast would an 87 kg man need to run in order to have the same kinetic energy as an 8.0 g bullet…

A: The kinetic energy of a body of mass m moving with velocity is given by, K=12mv2

Q: A stone with a mass of 2.40 kg is moving with velocity (6.20î – 1.80ĵ) m/s. (HINT: v² = v · v.) (a)…

A: Given  Massof stone m=2.40kg Initial velocity vi=6.20i-1.80j Final velocity vj=8i+4j

Q: A rock with a mass of 3.80 kg is moving with velocity (5.80î – 2.00j) m/s. (HINT: v? = v- v.) (a)…

A: Change in Kinetic energy is equal to net work done. Also to calculate kinetic energy, we need only…

Q: Is the answer I choose the correct one?

A: GivenWeight of the car W = 8000 NInitial velocity u = 12 m/sFinal velocity v = 0 m/sTime taken t =…

Q: Q39. How fast should a person of mass 50 kg run so that his kinetic energy is 625 J? O 5 Km/s O 5…

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Q: A stone with a mass of 3.20 kg is moving with velocity (5.20î − 2.00ĵ)m/s.  (HINT: v2 = v · v.) (a)…

A: The mass of the stone m=3.20 kg The initial velocity of the stone v1=(5.20î − 2.00ĵ)m/s The kinetic…

Q: How much work must be done by frictional forces in slowing a 1000.0 kg car from 19.8 m/s to rest?…

A: Given data:  Mass (m) = 1000.0 kg Initial velocity (Vi) = 19.8 m/s Final velocity (Vf) = 0 m/s…

Q: Q14) A 55-kg athlete climbs an 8 m long rope in 10 s. His average power output (in W) is A) 431 B)…

A: Mass of athelete = 55 kg  Vertical distance = 8 m  Time = 10 second

Q: 3) In the plot shown of force vs. distance, approximately how much work is done in moving an object…

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Q: 47. A 1500 kg car accelerates from rest to 75 km/h in 45s. How much power is supplied by the engine…

A: Given data: Mass of the car, m=1500 kg Since car starts from rest, we can take initial velocity,…

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

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Q: 6.00 × 105 J of work are done on a 2210 kg car while it accelerates from 15.0 m/s to some final…

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Q: A 95 kg man runs up a 20 m high stairs at a constant speed. If it takes him 8 seconds to reach the…

A: Given The mass of the man is m=95 kg. The height of the stairs is h=20 m. The time is taken by the…

Q: A car's engine generates 80000 W of power as it exerts a force of 6000 N. How long does it take the…

A: Given, Power generates engine of the car, P = 80000 Wforcec exerted by engine, F = 6000 Ndistance…

Q: metres and the velocity is 10.3 m/s. What is the kinetic energy (in J) of the rocket at this…

A: The answer is below

Q: Q28. A boy climbs onto a wall that is 3.4 m high and gains 2250 J of potential energy. What is the…

A: Here,  height of the wall (h) = 3.4 m potential energy (U) =2250 J acceleration due to gravity(g)=…

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: 1. Determine the power of a heavy equipment that performs 5.5 x 102 Joules of work in 1.1 seconds.…

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Q: 12. A mass of 1 kg. was released from a 1,000 meter height. What is its Kinetic Energy at the middle…

A: Mass of the object, m=1 kg Total height traveled by the mass, S=1000 m The initial velocity of the…

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: 20. Student A lifts a 40.-newton box from the flöor to a height of 0.30 meter in 2.0 seconds.…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: How much power does it take for a 60 kg person to run up stairs at a rate of 2.5 steps per second if…

A: Given data:  Mass (m) = 60 kg Time (t) = 1 s Number of steps rup up in 1 second = 2.5 Height of each…

Q: Name Phs 101 Quiz 3 (Spring 2019) 1) What would be the power output (in hp) if a 1750 kg car if it…

A: 1)Find the energy consumed by the car, by using law of conservation for energy.

Q: How much power is required to raise a 30-kg crate a vertical distance of 6m in a time of 4 seconds?…

A: The potential energy of a body is given by PE = mgh, where m = the mass of the body g = acceleration…

Q: A toy robot powered by an electric motor accelerates from rest to 0.740 m/s in 20.0 ms. The total…

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