A man pushes a lawn mower on a level lawn with a force of 200 N. If 31% of this force is directed forward, and 63 W of power is expended in pushing the mower 4.7 m, how much time is spent in pushing the mower this distance?

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: A man pushes a lawn mower on a level lawn with a force of 201 N. If 44% of this force is directed…

A: Given Data: The force with which the man pushes the lawn mover is given as f = 201N. The percentage…

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A: Energy = Power * time P=power = 4 W time=t=5 s   Energy=E= 4*5=20   mass=m=2.0 kg

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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: *68. D In 2.0 minutes, a ski lift raises four skiers at constant speed to a height of 140 m. The…

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A: Given data:  Velocity (v) = 3.5 m/s Power (P) = 250 W Required: Force (F)

Q: How much power is needed to lift a 12.5 kg sack of rice from the ground to a height of 1.5 m within…

A: According to guidelines we need to solve only first question kindly repost other questions in the…

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Q: How long will it take a 751-kg car with a useful power output of 57.5 hp (1 hp equals 746 W) to…

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A: mass = m = 75 kg height = h = 15 m time = t = 5 sec

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A: The mass of the bike and the biker together, m=73 kg   The speed, v=5 m/s   The angle, θ=4°

Q: A warehouse worker uses a forklift to raise a crate of pickles on a platform to a height 3.75 m…

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Q: if you pull a wagon with a force of 200 Newton's and it takes you 20 seconds to pull it 10 meters of…

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Q: As a part of a charity fund-raising drive, a marathon runner with mass of 75 kg runs up the stairs…

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Q: A warehouse worker uses a forklift to lift a crate of pickles on a platform to a height 3.75 m above…

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Q: An advertisement claims that a 1000 kg car can accelerate from rest to a speed of 20 m/s in a time…

A: mass = 1000kg v1= 0m/s;    v2=20m/s t= 5sec. K.E1= 0  (car starts from rest) K.E2= (1/2)* 1000*…

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

Q: 19. If a ski lift raises 100 passengers averaging 660 N in weight to a height of 150 m in 60.0 s, at…

A: average weight of a passenger= 660 N Total weight lifted= 100×660= 66000 N Height H= 150 m time…

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A: Power is defined as time derivative of the work done on a system, or work done per unit time. Work…

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

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Q: The aircraft carrier USS George Washington has mass 1.0 ×108kg. When its engines are developing…

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

Q: A 1200-kg sports car is advertised to accelerate from 0-100 km/h (27.78 m/s) in 3.00 s. What is the…

A: Solution

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A: Given, Mass(M)=13 kg. Displacement=65 cm=65/100 m=0.65 m. g=9.8 m/s²

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

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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: Consider a 1,499.74-kg car cruising at constant speed of 73.89 km/h. Now the car starts to pass…

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Q: A man pushes a lawn mower on a level lawn with a force of 196 N. If 55% of this force is directed…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

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: A bag of wheat weight 430 kg. To what height should it be raised so that potential energy is 9150 J…

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Q: A woman uses a pulley and a rope to raise a 20 kg weight to a height of 2 m. If it takes 4 s to do…

A: mass, m = 20 kg  height, h = 2 m  time, t = 4s  The formula for energy is  E = m g h  The power is…

Q: What average mechanical power (in W) must a 61.5 kg mountain climber generate to climb to the summit…

A: According to work energy theorem, the work required to climb the hill is,Substitute the values,

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Q: A man pushes a mower on a level lawn with a force of 155 N over a horizontal distance 7.2 m in 8.0s.…

A: Given data The force is given as F = 155 N. The horizontal distance is given as d = 7.2 m. The time…

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:

Q: A 1520kg of car accelerates from rest to 45 m/s in 8.2 s. The average power delivered by the engine…

A: The mass m=1520kg  To find the average power

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

A: