According to the work-energy theorem, the amount of net work done on an object is equal to the change in an object’s ____________________.
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A: Given mass m = 8.4 kg displacement = height h = 2.7 m
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Q: A force given by F a/x acts in the x direction, where a = 8,5 N/m/2
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Q: The brakes of a truck cause it to slow down by applying a retarding force of 6370 N to the truck…
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Q: The figure below shows a person pushing a box with a force of 2.2 N over a displacement of 2.5 m.…
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A: Mass of block = 0.33 kg Vertical distance moved by block = 2.41 m Speed at B ,Vb = 5.8 m/s
Q: A 1080 kg car accelerates at a rate of 2.1 m/s/s over a distance of 18 meters. How much work was…
A: Given, mass of the car, m = 1080 kg acceleration of the car, a = 2.1 m/s2 distance traveled, d = 18…
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- A child of mass m = 16 kg slides down a slide of height h = 2.7 m without friction. Let gravitational potential energy be zero at ground level. a)Write an expression for the child's total mechanical energy, E, at the top of the slide, in terms of the variables in the problem and the acceleration due to gravity g. b)Calculate the change in the child's potential energy, ΔU in joules, from the top to the bottom of the slide at ground level (i.e. ΔU = Uground - Utop). c)What is the child's final speed, vf in m/s?You are throwing a ball to a friend while taking physics and begin to wonder about work. You know that when you throw, you exert a force of 655 N on the ball (which has mass 1.84 kg), and that you do so for a distance of 0.27 m. If you start the throw from rest, what is the final speed of the ball? When you show your work for this question, you must do the calculations using work and energy for credit. If you use kinematics you will not recieve credit. Your Answer: units AnswerA box of mass 4.0 kg is accelerated from rest across a floor at a rate of 2.0 m/s^2 for 9.0 s . a.) Find the net work done on the box. Express your answer to two significant figures and include the appropriate units. W= ________
- A 2 kg object is thrown downward on an incline with initial velocity of 5m/s. After 12 meter displacement, its velocity becomes 8m/s. What is work done on the object by friction during the motion? (friction is between object and inclined surface). (Please type all steps of your solution and show the formulas you have used.)A four-meter chain hangs from a ceiling. The chain has a density of 1.5 kilograms per meter. Find the work done if the lower end of the chain is lifted to the ceiling so that it is level with the upper end.The brakes of a truck cause it to slow down by applying a retarding force of 7680 N to the truck over a distance of 760 m. What is the work done by this force on the truck? Number Units
- A man pushes a lawn mower on a level lawn with a force of 193 N. If 51% of the force is directed horizontally, how much work is done by the man in pushing the mower 5.8 m? _____ JA man picks up a 50 kilogram block and carries it up a flight of stairs 10 meters high. He then carries the block back down the stairs and places the block in its original position. What is the NET work done on the block?Question 1 The first question does not require the coefficient of friction. Doesn't all the work being performed by the system = friction? Friction is the only thing that is performing work?
- Add-ons Help В IUA 三三三三|三|三▼三 Roboto 12 A 55 kg person walks up three flights of stairs a distance of 10 m. How much work was done by student climbing the stairsIndicate (with a T of F) whether the statement is true or false. If false, change the underlined word or phrase to make the statement true. A bicycle moving at 5.0 m/s at sea level has more potential energy than a motionless bicycle at the top of a mountain. Mechanical work is calculated by multiplying the magnitude of a force times the amount of time it is applied. The SI unit for work is the joule. One joule is equivalent to 1N: m in SI units 5 tv MacBook ProThe figure below shows an overhead view of two horizontal forces pulling a box along the floor. How much work does each force do as the box is displaced 70 cm along the broken line. What is the total work done by the two forces in pulling the box this distance?