Work requires O motion. O zero net force. O zero momentum. a force perpendicular to the direction of motion.
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: Determine the power required to accelerate a 900-kg car shown infrom rest to a velocity of 80 km/h…
A:
Q: How much time does it take to lift 450 kg
A: Given; Engine develops power of = 35 kW Time required does it take to lift 450 kg to a height ,h=50…
Q: How much work is needed to stop a 1330 kg car that is moving straight down the highway at 15 m/s?
A: Given: mass of the car (m) = 1330Kg Initial speed of the car (u) = 15 m/s…
Q: .An electric motor has a power output of 1.5 kw. If it operates at 75% efficiency, what work can it…
A: N = 1.5 kW efficiency , = 75% To find = a) Work done in one hour in Joules b) Work…
Q: Find the work done (in J) by a force, F=3i - 8j N acts on a particle and displaces it Ar = 2i - 7j m
A: If a force (F) displaces a body by some distance (s), then a work (W) is said to be done by a force…
Q: ion, if the effective
A: Given: Mass of crate is 180 Kg Distance is 10.1 m Friction coefficient is 0.5
Q: What average power is needed to accelerate a 1 kg soccer ball from rest to 36 km/hr in 0.1 seconds?…
A: Given data: Mass (m) = 1 kg Initial velocity (v0) = 0 m/s Final velocity (v) = 36 km/hr Time (t) =…
Q: If the man in exercise of 500 J pushes the lawn mower 6.0 m in 10 s, how much power does he expend?
A: Given that,Energy expended, E=500 JDistance moved, d=6 mTime, T=6 secondsWe know that,Power=Energy…
Q: Food Fightl Someone throws a perfectiy good hamburger across the cafeteria. What velocity does it…
A: Using the standard formula of kinetic energy: K = 12mv2this impliesv = 2Kmv =2*790.35≅21.25m/s
Q: A 6.2 kg bundle starts up a 21° incline with 144 J ofkinetic energy. How far will it slide up the…
A: Given: The given values are, The given mass is, m=6.2 kg. And the given angle is 21°. Then the…
Q: n 3 A 440g stone is raised to a height of 16m. the gravitational potential energy (in Joule) of the…
A:
Q: A 62 kg woman jogs up a hill in 18 s. Calculate the power the woman exerts if the hill is 24 m high.
A: Mass of the person is m=62 kg Time is t=18 s Height of hill is h=24 m Note: 1 N=1 kg·m/s2 1 J=1Nm…
Q: It takes a .4 kW motor 30 seconds to drags a 500kg crate over an 30m incline with coefficient of…
A:
Q: Determine from what height would a car have to be dropped to have the same kinetic energy that it…
A: speed (v) = 25 mph Let the mass of the car = m
Q: Which illustrates zero work?. O hitting a baseball O carrying a bag while running O climbing up a…
A: Solution: Let's check each option one by one Hitting a ball Work is non zero on…
Q: A 25 kg object is raised a distance of 1.2 m above the ground. How much kinetic energy will the…
A: In this question, we have been given that an object is raised till a height of 1.2 meters, this…
Q: A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of…
A: Given: Mass,m=200g=200×10-3kgHeight,h=100mFinal Velocity,v=8m/sInitial Velocity,u=0m/sAcceleration…
Q: A 2-kg car accelerates uniformly from rest to a speed of 10 m/s in the first 5s (frictionless…
A: Given that-Acceleration of the car is given as:…
Q: All Might lifted a 95-kg villain straight up through a vertical distance of 1.2 m in 0.52 s at a…
A: Given Mass = 95 kg Distance h = 1.2 m Duration t = 0.52 s
Q: All the units below are units of power except: O Horsepower O Watts O Newtons O Joules per second O…
A: In the given question, We have to discuss about units of power. Then We choose the correct option.
Q: A 1200-N crate rests on the floor. How much work is required to move it at constant speed 5.0 m…
A: Given: In this question, the given details are, A 1200N crate rests on the floor. The constant speed…
Q: A man pushes a box up a trictionless ramp onto a dock He then lifts a second box of the same mass…
A: Work done is given as: W=F.s=Fscosθ Here, F is the force, s is the displacement, and θ is the angle…
Q: A 5 N force, parallel to an incline's surface, pushes a crate 5 m up the 15º incline at a constant…
A: The force acting parallel to the incline surface is F = 5 N. The angle of inclination of the…
Q: How much work is done? when 50N of force move a box through a distance?
A: Given, Force = 50 N
Q: Determine the power required by an 80kg man to run down a slope from 1.0 m/s to 2.0 m/s in 2…
A: Given data: Mass of man (m) = 80 kg Initial velocity (Vi) = 1.0 m/s Final velocity (Vf) = 2.0 m/s…
Q: Bassam pushes a box 2.5 m by applying a 20N horizontal force. What work does he do? Select one: a.…
A: Required : Work done, W.
Q: (a) What is its kinetic energy at this moment? (b) Find the net work done on the object if its…
A: Please refer below page.If you have any doubts please feel free to ask.Explanation:Step 1: Step 2:
Q: A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of…
A: We know that:-The work done by friction is the total change in mechanical energycan be written…
Q: he work done by a conservative force around a closed path is nonzero. T F ??
A: A conservative force is a force done in moving a particle from one point to another, such that the…
Q: If a man pushes with a 10N in a distance of 25m in 60 seconds how much power did he use
A: Given, Force (F) = 10N Distance (d) = 25m Time (t) = 60 Second Power (p) = ?
Q: Calculate the kinetic energy of a 0.15 kg baseball moving at a speed of m 39.0 ". Round your answer…
A:
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