A 5.0 kg mass is initially sitting on the floor when it is lifted onto a table 1.15 meters high at a constant speed at a time of 5 seconds. How much is the rate of doing this work? a. 0.015 Horsepower b. 2.25 Watts c. 1.54 x 10 ^-3 Kwatts d. 7.08 x 10^-3 Horsepower

Q: hen released, a 100-g block slides down the path shown below, reaching the bottom with a speed of…

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Q: During the Powerhouse lab, Gab runs up the stairs, elevating his 98 kg body a vertical distance of 3…

A: Given: The mass of the object is 98 kg. The vertical distance covered by the object is 3 m. The time…

Q: 900 N box is pushed up an inclined plane that is 6.0 m long. It requires 3900 J of work to get the…

A: kinetic energy at bottom= kinetic energy at top=0 as as bottom and top the speed is zero. potential…

Q: 16. A rubber ball and a lump of clay have equal mass. They are thrown with equal speed against a…

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Q: 6. A child does 350 J of work to lift a box from the ground up to his tree house at a steady speed.…

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Q: 9. How much work must be done to extend a spring by 1.50 cm from its relaxed length if its spring…

A: Work: Work done on an object is defined as the scalar product of the force vector and the…

Q: A force with a magnitude of 25 N and directed at an angle of 37° above the horizontal is used to…

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Q: A car of mass 1,000 kg moves with a speed of 5.00 m/s. If the car triples its speed to 15.0 m/s then…

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Q: A weighlifter lifts a 50-kg barbell a vertical height of 2.0 m in 5.0 s. What is the average power…

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Q: An accelerating object of mass m=20 kg is fired with an initial speed v;=10 m/s at a starting point.…

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Q: What power on the cable does it require to lift a 250 kg elevator cab and 4 passengers each with a…

A: mass of elevator cab = 250 kg Number of passengers = 4 mass of each passenger = 50 kg Height (h) =…

Q: A 2.00-kg (20.0-N) stone is dropped from a height of 5.0 m, and strikes the ground with a velocity…

A: Given data: Mass, m=2 kg Height, h=5 m Velocity, v=8 m/s Question is to find the work done by the…

Q: How much work (in J) must be done to lift a stack of bricks, which has a mass of 50 kg, from the…

A: Given data The given mass is m=50 kg The height is h=8 m The accleration due to gravity is g=10 m/s2…

Q: How much work is needed to change the speed of a 2375 kg sport utility vehicle from 15.0 m/s to 60…

A: Given data:  Mass (m) = 2375 kg Initial velocity (Vi ) = 15.0 m/s Final velocity (Vf) = 60 m/s…

Q: An elevator cable breaks when a 925 kg elevator is 26.5 m above the top of a huge spring (k =…

A: Given data: The mass of the elevator, m=925 kg. The height of the elevator with respect to the top…

Q: work done by Jerome in climbing the staircase.

A: Given: Mass of the person is m=102 kg Vertical distance covered is h=2.29 m Time taken is t=1.32 s…

Q: The average horsepower required to raise a 150 kg drum to a height of 20 m in a time of 1 minute is…

A: Givenmass, m=150 kgheight, h=20 mtime , t=1 min            =60 swork done would beW=mgh…

Q: A mother does 220 J of work while pulling her child back on a frictionless swing, whose chain is 4.7…

A: Correct Answer: The mass of the child is 26.4 kg. Note: Please recheck your given option as all the…

Q: worker applies a force of 190 N, directed 22° below the horizontal. As the crate moves 3.3 m, How…

A: Given :-  F = 190 N  S = 3.3 m m = 52 kg  directed 22° below the horizontal

Q: A worker pushes a wood crate of mass 23.4 kgacross a concrete floor witha constant horizontal force…

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Q: A 55 kg weightlifter can lift TWICE his weight to 2.0 m in 2.0 seconds. His power output is _____.…

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Q: What is the kinetic energy of a 1400 kg car traveling at 5.3 m/s? A. 7.4 x 103 J B. 2.0 x 104 J…

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Q: A 1500-kg automobile moves at a constant speed of 60 MPH across a 10-m inclined surface. What is the…

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Q: A 13 kg mass object initially has 2500 J of kinetic energy. -1200 J of net work is then done on the…

A: Given: The mass of the object is 13 kg. The initial kinetic energy of the object  is 2500 J. The net…

Q: A child lifts a 5 kg box up from the floor. The child then carries the box with constant speed of 1…

A: Given : m = 5 kg v = 1 m/s

Q: As a woman carries her suitcase up a flight of stairs, she does work against gravity. If the mass of…

A: mass of suitcase (m) = 10 kg Height of stairs (h) = 12 m g = 9.8 ms2

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: There is a 100 kg box that starts at rest. a person pushes that box over the course of 18 meters…

A: Given mass of box m = 100 kg initial speed u = 0 m/s final speed v = 10 m/s displacement x = 18 m…

Q: p A 1000 kg sports car accelerates from zero to 25 m/s in 7.5 s. What is the average power delivered…

A: Given data: Mass (m)= 1000 kg Initial velocity (u) = 0 m/s Final velocity (v) = 25 m/s Time (t) =…

Q: A machine does 2500 J of work in 1 min. What is the power developed by the machine? A. 21 W B. 42 W…

A: Solution 1 Given that :- Work done W = 2500 J Time t = 1 min = 60 sec The power P can be written as…

Q: How much Gravitational Potential Energy does 5000 gallons (18,925 kg) of water have in a 50 meter…

A: Solution: Given that mass of water m = 18925 kg height from the earth surface = 50 m

Q: A certain truck has twice the mass of a car. They both move with the same speed. If the kinetic…

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Q: In a dam, water is flowing at the rate of 1400 kg/s and falls from 40 m height. The power is…

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Q: 2. A hand gun fires a 7.50g bullet at a speed of 377m/s. A. Calculate the bullet's kinetic energy.…

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Q: What is the minimum amount of work needed to lift a 3 kg box 2 meters? a. 60 J b. 5 J c. 15 J d. 120…

A: Mass, m = 3 kgHeight, h = 2 mWork done, W = ?

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 particle of mass 1.0 kg moves from A to B in response to two forces. One force does work of +100 J…

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Q: A boy pushes on a parked car with a force of 200N. The car doesn’t move. How much work does the boy…

A: The work done by a force can be defined as the product of the displacement of the particle and the…

Q: Find the magnitude of the net torque (in N.m) on the wheel shown in the Figure about the axle…

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Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.