A 1000 kg car moves with a speed of 20 m/s. Suddenly the driver speeds up to 30 m/s, what is the work done on the car by the net force during this motion (in J)? a. 175500 b. 150000 c. 112500 d. 250000

Q: A 3.75-kg crate starting at rest slides down a rough 6.20-m-long ramp, inclined at 35.0° below the…

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Q: A helicopter lifts a 71 kg astronaut 12 m vertically from the ocean by means of a cable. The…

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Q: A 9.50 g bullet has a speed of 1.26 km/s. (a) What is its kinetic energy in joules?  ________ kJ…

A: The kinetic energy of the bullet is KE=12mv2=129.50×10-3 kg1.26×103 m/s2=7541.1J≈7.54kJ

Q: The figure shows the work done on an object traveling along different paths between 3 different…

A: Given: The work done from path B to A is 30 J. The work done along paths B to C is -10 J. The forces…

Q: Q4. (b) A helicopter lifts a 72 kg astronaut 15 m vertically from the ocean by means of a cable. The…

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Q: QUESTION 8 How much work (in J) must be done to lift a stack of bricks, which has a mass of 50 kg,…

A: Given: The mass of the stack of bricks is 50 kg. The height of lift is 4 m. The acceleration due to…

Q: How much work is done by the force as the object moves from x = 0 to x = 2.0 m? Express your answer…

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Q: 21. A 0.600-kg particle has a speed of 2.00 m/s at point A and V kinetic energy of 7.50 J at point .…

A: Solution:-(21) Part (a):- We know , kinetic energy k = (1/2)×m×v2 Then Ka= (1/2)×0.600×(2)2 […

Q: DETAILS SERPSE10 7.4.P.009. MY NOTES ASK YOUR TEACHER A particle is subject to a force F, that…

A: The area under the force time graph gives the work done.

Q: A block of ice with mass 4.00 kg is initially at rest on a frictionless, horizontal surface. A…

A: Work done by the force during first 4 s of the motion is 13.10 J However in the given option there…

Q: A 1200 kg frictionless roller coaster starts from rest at a height of 18 m. What is its kinetic…

A: Using law of conservation of energy, the expression for find kinetic energy is…

Q: •8 A ice block floating in a river is pushed through a displacement d = (15 m)i – (12 m)j along a…

A: The displacement of an ice block,

Q: A force É = 12 N î - 10 N î acts on an object. How much work does this force do as the objęct moves…

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Q: Releasing some frustration at the end of the semester, you throw your physics book (mass of 2.7 kg)…

A: Given: m=2.7 kg h=25 m v=6 m/s Thermal energy=284 J

Q: James and Amari are working on moving a bench from a city park. They take turns pulling the stakes…

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Q: Q05. If an object goes to the left, but one of the forces pushes it to the right, opposing its…

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Q: A single force acts on a 0.99 kg particle-like object in such a way that the position of the object…

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Q: 1) How much work is needed to change the speed of a 1837 kg sport utility vehicle from 15.0 m/s to…

A: Given data:  Mass (m) = 1837 kg Initial velocity (Vi) = 15.0 m/s Final velocity (Vf) = 60 m/s…

Q: 83. Suppose that you apply a 60-N horizontal force F to a 30kg package, which pushes it 4 meters…

A: Given, Force apply F= 60 N mass of package m = 30 Kg distance s = 4 m

Q: A tow truck drags a stalled car along a road. The chain makes an angle of 30° with the road and the…

A: Given Data: The angle between the chain and road is: θ=30° The tension in the chain is: T=1800 N The…

Q: A force, Fy acts on an object that is moving along the x-axis. The graph of the force as a function…

A: Given Here force vs position time graph is given We have to calculate the work done by the force for…

Q: 2. A spring on a horizontal surface can be stretched and held 0.5 meters from its equilibrium…

A: Given: The stretching in the spring due to force 50 N is 0.5 m from the equilibrium.

Q: An object has several forces acting on it. One of these forces is F = aryi, a force in the…

A: The work done is defined as force times displacement. For the given force and displacement, the work…

Q: A rock with a mass of 3.80 kg is moving with velocity (5.80î – 2.00j) m/s. (HINT: v? = v- v.) (a)…

A: Change in Kinetic energy is equal to net work done. Also to calculate kinetic energy, we need only…

Q: The force of gravity does NOT do work on an object that is what?

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Q: Josh does 750 J of work pushing a desk 10 meters across the classroom. How much force did he use to…

A: Given Data: The work done by Josh to push the desk is: W=750 J The distance covered by the desk is:…

Q: A 0.25 slug (3.6 kg) object begins moving at 46 mph (20.6 m/s). A force slows it down to 37 mph…

A: Mass of the object is m = 3.6 kg Initial speed of the object is u = 20.6 m/s Final speed of the…

Q: A 0.34-kg particle has a speed of 3.0 m/s at point A and kinetic energy of 8.1 J at point B. (a)…

A: Mass of the particle m=0.34 kg Speed of the particle at point A ,vA=3.0 m/s The kinetic energy at…

Q: Question. A cyclist and bike have a total mass of 5 Kg and moving with a speed of 10 m/s. Calculate…

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Q: 9- A student pushes a chair in her dorm with a horizontal force of 70 N. The friction force between…

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Q: 1. Pete lifts a 500 Newton barbell to a height of 1.2 meters. (a) How much force must Pete apply to…

A: Given: Weight of barbell W=500 N Height hoti which barbell is to be lift h=1.2 m To determine (a)…

Q: A helicopter lifts a 83 kg astronaut 12 m vertically from the ocean by means of a cable. The…

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Q: 2 A certain automobile has a mass of 1200kg. a. How much work is required to increase the speed the…

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Q: You do 30 J of work to load a toy dart gun. However, the dart is 10 cm long and feels a frictional…

A: The Kinetic energy of dart is given by, KE=PE-Ffricl Here PE= Potential Energy=30 J, Ffric=…

Q: A 0.32-kg particle has a speed of 5.0 m/s at point A and kinetic energy of 8.4 J at point B. (a)…

A: Given: The mass of the particle is m=0.32 kg, The velocity of the particle at point A is vA=5.0…

Q: Q4] a-How much work is done by the horizontal force F1-150N on the 20 Kg block when the force pushes…

A: BY Work energy theorem, External work= change in P.E                                       +…

Q: Work is done while lifting a 200.0 N barbell 0.75 meters over your head. Given this information, how…

A: Given Data: The lifting force is, F=200.0 N The distance between barbell and your head is, d=0.75 m…

Q: A 17 g bullet is accelerated in a rifle barrel 81.5 cm long to a speed of 846 m/s. Use the…

A: It is given that, m=17 g=0.017 kgs=81.5 cm=0.815 mv=846 m/s

Q: 11. How much work does Amanda's car experience compared to Bertha's? Amanda and Bertha are in a car…

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Q: Two blocks are connected by a very light string passing over a massless and frictionless pulley.…

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Q: Webassign.net/web/Student/Assignment-Responses/submit?dep=25170322&tags=autosave#question4009618_4…

A: Given: Graph of force versus distance.

Q: 17

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Q: A box of mass 10 kg initially was at rest on a frictionless horizontal table. After applying a force…

A: Given that, The mass of a box, m = 10 kg The initial speed of the box, u = 0 (at rest) After…

Q: The driver of a 760.0 kg car decides to double the speed from 21.1 m/s to 42.2 m/s. What effect…

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Q: Q7 A ball, of mass m = 1.0 kg slides on a rough path AB. If the ball starts from rest at point A and…

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Q: A force and a displacement are given in component form. What is the work done by this force?…

A: →F=5i+2j+k N→∆r=2i-3j+2k m

Q: A boy flies a kite with the string at a 30° angle to the horizontal. The tension in the string is…

A: