A child pulls on a wagon with a force of 67 N. If the wagon moves a total of 45m in 188 s, what is the average power delivered by the child?
Q: An engine is being used to raise a 89.0 kg crate vertically upward. If the power output of the…
A: Given: mass of crate, m = 89 kg power output of the engine, P = 1620 W vertical distance, h = 18.7 m
Q: A man pushes a lawn mower on a level lawn with a force of 213 N. If 53% of this force is directed…
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Q: If a 1300 kg car can accelerate from 30 km/h to 60 km/h in 3.9 s , how long will it take to…
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Q: A student weighing 551 N climbs at constant speed to the top of an 14 m vertical rope in 17 s. What…
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Q: Brick load. A load of bricks with mass m = 363 kg is to be lifted by a winch to a stationary…
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Q: When its engine of power 74 kW is generating full power, a small single-engine airplane with mass…
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Q: A constant 81.8-N force acts on a 3.70-kg box. The box initially is moving at 11.3 m/s in the…
A: Applying Work-Kinetic Energy theorem:- Work done by the force(W)=Change in KE of the object Hence,…
Q: An 80-kg jogger that is initially running at 5.0 m/s uniformly accelerates to 8.0 m/s in a time of…
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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 83.5 kg man walks up a set of stairs in 11.7 s. The man rises 4.5 m in going up the stairs. What…
A: Write the expression for the work done by the man to climb a set of stairs and substitute the…
Q: A fully-loaded, slow-moving freight elevator has a cab with a total mass of 1700 kg, which is…
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Q: average power delivered
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Q: A 62.0 kg woman runs up a flight of stairs having a rise of 4.28 m in a time of 4.20 s. What average…
A: Given data: Mass (m) = 62 kgHeight (h) = 4.28 mTime (t) = 4.20sRequired:The average power (P)
Q: A crane lifts a 320 kg crate up a height of 4.5 m. The crane has a power rating of 2000 W. How much…
A: Given data The mass of the crate is given as m = 320 kg. The height up to which the crate lifts is…
Q: A person lifted the barbell from the ground. The mass of the barbell was 100 kg. It took him 0.5…
A: The objective of the question is to calculate the average power output of a person lifting a…
Q: A 520-kg dragster accelerates from rest to a final speed of 105 m/s in 390 m, during which it…
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Q: Quick Start: A car accelerates from 0 to 43.2 m/s in 4.67 s. The mass of the car is 2.04e+03 kg. (a)…
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Q: A man pushes a lawn mower on a level lawn with a force of 200 N. If 31% of this force is directed…
A: Given: The force F = 200 N. The power P = 63 W. The distance d = 4.7 m.
Q: A 1000 kg car is initially travelling at 26ms26ms along a horizontal road when the driver hits the…
A: The car is having a deceleration. The equation of motion is given by, v=u-at Here, v is the final…
Q: A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting…
A: Given that: The mass of the helicopter is m=710 kg The initial velocity is u=0 m/s The final…
Q: Measurements in the 1800s showed that a draft horse could provide a maximum steady output power over…
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Q: Measurements in the 1800s showed that a draft horse could provide a maximum steady output power over…
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Q: An applied force of 14.6 N acts on a 2.50 kg mass that is initially at rest. Over a distance of 2.36…
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Q: A 670-N Marine in basic training climbs a 11.5-m vertical rope at a constant speed in 6.50 s. What…
A: Given data: Weight (mg) = 670 N Height (h) = 11.5 m Time (t) = 6.50 s Required: The power output
Q: A fighter jet is launched from an aircraft carrier with the aid of its own engines and a…
A: The objective of the question is to find the work done by the catapult on the fighter jet. The 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 warehouse worker uses a forklift to raise a crate of pickles on a platform to a height 2.75 m…
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Q: power
A: Given: Mass of the dragster = 650 Kg initial speed = 0 final speed = 110 m/s Distance= 400 m…
Q: A 55.5 kg man walks up a set of stairs in 10.2 s. The man rises 4.5 m in going up the stairs. What…
A: Given Data Mass of man, m = 55.5 kg height, h = 4.5 m Time taken, t = 10.2 s Average power (in…
Q: If a 1300 kg car can accelerate from 30 km/h to 60 km/h in 3.9 s , how long will it take to…
A: Mass of car, m = 1300 kg Velocities are, v1 = 30 km/h = 30*(1000m/3600s) => v1 = 8.33 m/s v2 =…
Q: A 75 kg student runs up the stadium stairs for a distance of 15.00 m in 5.0 seconds. How much power…
A: mass = m = 75 kg height = h = 15 m time = t = 5 sec
Q: The driver of a 1750 kg car, initially traveling at 10.6 m/s applies the brakes, bringing the car to…
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Q: You push a 100 kg wheeled (frictionless) cart across a floor a distance of 13 m by applying a force…
A: Given data: Mass (m) = 100 kg Displacement (d) = 13 m Force (F) = 10 N Time (t) = 9 s Required:…
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- A 100 kg weightlifter performs a lift called a clean and jerk, raising a 190 kg bar from the ground to a height of 1.9 m in a time of 1.8 s. What is his output power?How much power is needed to push a 1100 kg piano up a 4.0 meter ramp into a truck bed that is 1.5 meters off the ground in 10.0 seconds. The coefficient of friction between the ramp and the piano is 0.32Your job is to lift 25.0 kg packaged boxes a vertical distance of 1.0 m from the ground onto the bed of a delivery truck. How many packaged boxes would you have to load onto the truck in one minute for your average output power that goes into lifting the boxes to be 0.11 hp?
- A sprinter who weighs 639 N runs the first 8.6 m of a race in 1.9 s, starting from rest and accelerating uniformly. What are the sprinter's (a)speed and (b) kinetic energy at the end of the 1.9 s? (c) What average power does the sprinter generate during the 1.9 s interval?An applied force of 14.4 N acts on a 2.50 kg mass that is initially at rest. Over a distance of 2.35 m, the object changes its kinetic energy by 19.7 J. What amount of work is done by kinetic friction?19. If a ski lift raises 100 passengers averaging 660 N in weight to a height of 150 m in 60.0 s, at constant speed, what average power is required of the force making the lift? (а) 1.65х105 W (b) 2.36х105 W (с) 3.50х105 W (d) 1.12x105 W
- A railroad locomotive accelerates a 95,000-kg railcar from 10 m/s to 25 m/s in 90 seconds. What was the average power transferred to the boxcar during this process? 25 MW 280 kW 330 kW 2.3 MW 48 kWA man pushes a lawn mower on a level lawn with a force of 211 N. If 52% of this force is directed forward, and 53 W of power is expended in pushing the mower 7.0 m, how much time is spent in pushing the mower this distance?A 35.0 kg crate sits on a conveyor belt with s = 0.870. The conveyor belt starts at rest.Once it is turned on, the crate (which follows the belt, so that it stays at rest with respect to thebelt) speeds up to 2.30 m/s in a uniform fashion. How much power does the motor use to turnthe conveyor belt?
- A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 2.50 x 105 N. In being launched from rest it moves through a distance of 93.6 m and has a kinetic energy of 4.37 x 107 J at lift-off. What is the work done on the jet by the catapult?A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 2.37 x 105 N. In being launched from rest it moves through a distance of 80.6 m and has a kinetic energy of 4.56 x 107 J at lift-off. What is the work done on the jet by the catapult?Measurements in the 1800s showed that a draft horse could provide a maximum steady output power over the course of a working day; that’s how the “horsepower,” about 750 W, came to be defined. Another animal that’s used for pulling loads for which there are good data is the sled dog. A 38 kg dog can provide power to pull a sled with a force of 60 N at a steady 2.2 m/s. Dogs and horses have approximately the same 25% metabolic efficiency as humans. How many sled dogs would be needed to provide 1 horsepower?A. 6 B. 12 C. 14 D. 20