A 2.82 kg object is dropped, from rest, from a height of 24.4 m above the ground. Assuming air-resistance can be neglected, what is the kinetic energy of the object just before it hits the ground?

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: How fast must a 3000-kg elephant move to have the same kinetic energy as a 65.0-kg sprinter running…

A: We have to determine the speed of an elephant. We know the given data is given by, Mass of elephnt…

Q: Application: Construct the circuit in figure. Vsi-10 V, Vs:-5 V, R-330 52, R₂-1 K2, R₂-100 £2 R-10 K…

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Q: Calculate the kinetic energy of a 226. mg raindrop moving at a speed of 3.4m/s. Round your answer to…

A: The objective of this question is to calculate the kinetic energy of a raindrop given its mass and…

Q: A 73-kg boy is surfing and catches a wave which gives him an initial speed of 1.6 m/s. He then drops…

A: Given data: Mass of boy, m = 73 kg. Initial speed of boy, v1= 1.6 m/s. The boy then drops through a…

Q: The mass of a baseball is 1.452 lb. Determine its kinetic energy relative to home plate of a 93.87…

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Q: e man?

A: Given: Height of wall is 5 m Potential energy is 2130 J Consider the wall,

Q: Ellie is pushing a rolling bag at 40o with a force of 350 N and able to displace her bag by 2800 mm,…

A: The angle is Φ = 40o  Force is F = 350 N  Displacement is S = 2800 mm = 2.8 m

Q: Write down a relation connecting potential energy and force.

A: Relation connecting force and potential energy is,

Q: object of mass 6 bie

A: Given: Mass of object is 6 kg Kinetic energy is 180 J Speed is 0.1m/s

Q: A 75kg basketball player performs a vertical jump of 0.30m. Use the work/energy  approach to…

A: Given data, Mass m=75 kg Height h=0.3 m

Q: Calculate the work done in lifting a 300 N weight to a height of 10 m with an acceleration 0.5 ms.…

A:

Q: Asoccer player strikes a 428gramball with an initial velocity of 27.4m/s. The ball strikes the…

A: Given data:  Mass of ball (m) = 428 g = 0.428 kg Initial velocity (Vi) = 27.4 m/s Final velocity…

Q: A boat travels 200 m due NE, while the wind exerts a force of 450N toward West. How much work does…

A: Given information: The distance traveled by the boat in NE direction (d) = 200 m The magnitude and…

Q: Three objects with masses m, = 7.4 kg, m, = 11 kg, and m,- 19 kg, respectively, are attached by…

A:

Q: rue or false Energy is conserved in all situations.

A: Given: The answer is mentioned below:

Q: As shown in the image above, a ball slid down a hill and fell into an opening in the ground,…

A: The following problem involves the law of conservation of mass. The law states that if there is no…

Q: If you walk 2.0 m horizontally forward at a constant velocity carrying a 20-N object, what is the…

A: Given Data : The distance travelled horizontally is given as d = 2 m The weight of the object is…

Q: A 4 kg ball falls from height of 29. What willbe potential energy of the ball after 1 second? Use g=…

A: Given that:- mass, m = 4 kg height, h = 29 m time, t = 1 sec

Q: s 0.36?

A: Given: Mass of bundle is 4.6 Kg Incline angle is 30o Kinetic energy is 178 J Friction coefficient is…

Q: Can kinetic energy be negative? Explain.

A: Kinetic energy is,

Q: A 20kg box has an inital velocity of 20 m/s to the right. A person applies a force of 200N to the…

A:

Q: How do you find the work done by those forces?

A: Draw the free-body diagram of the crate.

Q: Two identical golf carts move at different speeds. The faster cart has twice the speed and therefore…

A: Kinetic energy is the energy possess by an object due to its motion. K = (1/2)mv2  K is proportional…

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: The sign of many physical quantities denends on the c

A: The sign of many physical quantity depend on the choice of coordinate.

Q: A moving object is acted by a frictional force. What is the work done by this frictional force?

A:

Q: . Is it possible to do work on an object that remains at rest?

A: Work

Q: 12. A force is if the work it does around any closed path is zero.

A: A force is _________ if the work it does around any closed path is zero.

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 80.0 kg mail bag hangs by a vertical rope 3.5 m long. A postal worker then displaces the bag to a…

A:

Q: A student is watching pilings being driven into the ground. From the size of the pile driver the…

A: Given that  M = 500 kg  h = 10 m

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: Calculate the kinetic energy of a 0.15 kg baseball moving at a speed of m 39.0 ". Round your answer…

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Q: On an essential frictionless, horizontal ice rink, a skater moving at 4.0m/s encounters a rough…

A: Given Data: The initial speed of a skater is, vi=4.0 m/s The final speed of a skater after reduces…

Q: Your discussion partner is confused about ideas discussed in Chapter that seem to contradict ideas…

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Q: Consider a compact car that is being driven at 88 km/h. The acceleration of gravity is 9.8 m/s. From…

A:

Q: Which situation demonstrates a positive work done?

A: situation demonstrates a positive work done

Q: Calculate the kinetic energy of a 541. kg roller-coaster car moving at a speed of 25.5×m/s. Round…

A: The objective of this question is to calculate the kinetic energy of a roller-coaster car given its…