How many watts of power do you expend when you exert a force of 1N that moves a book 2m in a time interval of 1s?

Q: During a drag race Car A does work in moving 500 m in 4 seconds whereas Car B does the same work in…

A: Given two cars A and B does same work. Time of car A  tA = 4 sec Time of car B tB = 5 sec We have to…

Q: A man of mass 60 kg runs up a flight of 30 steps in 40 s. If each step is 20 cm high, calculate his…

A: Step 1   ∙Mass of man m=60kg   ∙Flight 30 steps in 40sec.   ∙Each step is 20cm high.

Q: How much power is needed to uniformly accelerate a 1000-kg test car from 30 kph to 70 kph as it…

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Q: A man pulls a 6 kg luggage along a level road for 12 m exerting a force of 15 N at an angle of 20…

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Q: You give 90 J of kinetic energy to a 1 kg stone when you throw it. By how much do you increase its…

A: The energy gained by the stone = 90 Joules. Mass of the stone (m) = 1 kg.

Q: Calculate the kinetic energy in Joule, of a car of mass 1800kg travelling at 40km/h.

A: Recall KE=1/2mv^2 m=1800kg v=40km/hr=11.11m/s

Q: Your gasoline engine has a limited supply of gasoline, able to do 5000 J of work. If you weigh 800…

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Q: Body A has a mass of 0.001KG and move in with the speed of 10m/s, where body B has a mass of  5 KG…

A: Given:Body (A)Mass,m=0.001 kgVelocity,V=10 m/sBody(B)Mass,m=5 kgVelocity,V=1 m/sBody (A)Kinetic…

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Q: A man pushes a lawn mower on a level lawn with a force of 200 N. If 48% of this force is directed…

A: The force,   The distance,

Q: Youare riding a sled trougha frozen lake, and you accelerate the 80.0-kg combination of you and the…

A: m=80 kgvi=1 m/svf=3.5 m/st=1.5 s

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 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: How many watts of power do you expend when you exert a force of 1 N that moves a book 2 m in a time…

A: The power exerted on the book can be given by

Q: Determine the power a hiker of mass - 60 kg must have to carry up a 20 kg backpack up a hill of…

A: Mass of hiker, M = 60 kgMass of backpack, m = 20 kgHeight, h = 20 mTime, t = 4 sAcceleration due to…

Q: You are an athlete who masses 80 kg. When doing a pushup you lift a total of about 56 kg a distance…

A: The gravitational force is, F=mg Here, F is the force, m is the mass and g is the acceleration due…

Q: How much kinetic energy does a 5.0 kg object have when it is moving at 3.0 m/s? By what factor does…

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Q: A 70 kg person runs up a staircase 3.0 m high in 3.5 s.  How much horsepower does he develop in…

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Q: Calculate the kinetic energy in Joule, of a car of mass 1500kg travelling at 105km/h.

A: Mass of car: M = 1500 kg Speed of car: v = 105 km/h = 29.1667 m/s

Q: Calculate the kinetic energies (in J) of the following. a 2,004.0 kg automobile moving at 140.0…

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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…

Q: When doing a chin-up, a physics student lifts her 42.0-kg body a distance of 0.25 meters in 2…

A: Mass of the physics student,

Q: 2.5 kg dictionary from the floor onto a shelf 1.9 How much work (in Joules) is done in lifting:a m…

A: The work done in joules can be calculated in given steps:Given:

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 student, mass 60 kg, lift himself 2m at an average speed of .50m/s. find his average power

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Q: A 4.5kg sled is pulled across level snow with a force of 225N on a rope that is 35 degress above the…

A: The work done on the sled is W=Fdcosθ=225 N65.3 mcos35°=12035.4 J

Q: Calculate the power output in watts and horsepower of a shot-putter who takes 1.20 s to accelerate…

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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: Calculate the kinetic energy in Joule, of a car of mass 1300kg travelling at 50km/h.

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Q: Gravel is lifted from the ground to the top of a building 60 feet high by a 20 Hp engine.How many…

A: Power of engine = 20 Hp using 1 Hp = 746 Watts Therefore, power of engine = 20 * 746  = 14920 Watts…

Q: Cite an example wherein  force exerted on a body does no work. Explain.

A: Work done is defined as the product of force, displacement and cosine of angle between force and…

Q: Question The potential energy of a person is 980 Joule who climbs a flight with stairs 10m high at…

A: According to our guideline we have to the first question only please upload another question…

Q: A 65 kg mountain climber climbs through a vertical rope at a constant acceleration from rest to a…

A: Write the given values with the suitable variables. m=65 kgu=0 m/sv=1.25 m/st=10 s Here, m, u, v,…

Q: Wonder Woman uses 2000 N to lift a truck 2.3 meters in 5 seconds. How much power did she use?

A: We know that power  P= W/t Where W is work done and t is time

Q: An elevator that masses 800 kg rises at a rate of 2 m/s for 10 seconds. How much power does the…

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Q: You're riding a toboggan down an icy run to a frozen lake, and you accelerate the 80.0-kg…

A: Given : m=80kg u=1m/s v=2m/s t=2s

Q: Calculate the kinetic energy in Joule, of a car of mass 1400kg travelling at 90km/h.

A: Given, mass m=1400 kg velocity v=90 km/h

Q: If you push a crate horizontally with 100N across a 10-m factory floor and the friction between the…

A: The expression for the required kinetic energy from work energy theorem is,

Q: Suppose you expend 1000 J of energy running up the stairs for 20 seconds. How much power did you…

A: Given value --- expand energy = 1000 J. time = 20 sec. We have to find---  How much power did you…

Q: How much kinetic energy will a 70 kg diver have when he reaches the water after jumping off a 5.0m…

A: Scenario - A diver jumps from a certain height into water. Given : Diver mass →m=70 kg Dive height…

Q: At what speed does a 2000 kg compact car have the same kinetic energy as a 2.00x10“ kg truck going…

A: Mass of truck, M=2×104 kg Speed of truck, V=23 km/hr Mass of car, m=2000 kg Let speed of car be v in…

Q: Grace ran 18.084 km in 1.000 h, a world record time. If her kinetic energy was 694 J, what was her…

A: Given Data : The distance traveled by Grace is given as d = 18.084 Km = 18084 m. The time taken by…

Q: What is the power demonstrated by a weightlifter when lifting a 420 kg barbell 1.4 meters in 0.65…

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Q: While cruising along a level ground in a one horse open sleigh at 4.0 m/s, Santa cracks the whip and…

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Q: At an amusement park , a swimmer uses a water slide to enter the main pool. If the swimmer starts at…

A: initial speed = 0 m/s vertical height = 2.81 m Surface = frictionless

Q: If you push a crate horizontally with 100N across a 10-m factory floor and the friction between the…

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Q: Mama Mia lifts up a 6.2 kg pie from the table a distance of 1.8 meters high with an acceleration of…

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Q: A weightlifter raises a 150-kg barbell from the floor to a height of 2.2 m in 0.80 s. What is his…

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