1. When you lift a book from the ground to your desk, what kind of work do you do, negative or positive? By lifting the book, what do you change? Does the book gain or lose energy? What kind of energy?

Q: 1. A snowboarder is performing tricks on a half-pipe. The half-pipe has a vertical height of 7.0…

A: A half pipe is a semicircular arc used for snowboarding. Both ends have same height. We are given…

Q: 2. If a man lifts a 20.0-kg bucket from a well and does 6.00 kJ of work, how deep is the well?…

A: solution is given as

Q: 2. Which situation demonstrates a positive work done? Group of answer choices A basket being lifted.…

A: Case 1 Work is done by man against gravity When basket being lifting Case 2 No work done by boy…

Q: To make a batch of cookies, you mix half a bag of chocolate chips into a bowl of cookie dough,…

A: Here's the information that we need to use: FF is the applied force vv is the speed ΔtΔt is the…

Q: As a ball falls under the influence of gravity, does gravity do positive work or negative work?…

A: Given data:  A ball falls under influence of gravity Required: The work done by gravity is negative…

Q: You are reshelving books in your dorm room. You lift a book from the ground to the top shelf. The…

A: According to the question, the kinetic energy at the ground and at the final height h(say), the…

Q: How much work would you do lifting a 4kg book 2m vertically as you place it on a shelf? How much…

A: mass m= 4kg Height  h= 2m accleration due to  gravity g= 9.8m/s^2

Q: 4. You lift your pet cat vertically by 2.0 m, and then you lower it vertically by 2.0 m. During this…

A:

Q: 15. A 12 kg crate is pushed up an incline from point A to point B as shown in the figure: B 7.5 m…

A: Solution:-Given thatmass of crate (m)=12 kg

Q: As I carry a box up a flight of stairs, am I doing positive work or negative work on the box?…

A: When you carry a box up a flight of stairs, the force is in the direction of the displacement. Hence…

Q: 2. Can the work done by the force of kinetic friction on an object ever be positive? If "yes," give…

A: Kinetic friction force : kinetic friction exist between two contact surface only when there is…

Q: 1. If you pushed a 20 kg box across the floor for a distance of 60 m with a force of 15 N how much…

A: #1 Given data: The mass of box is m=20 kg. The distance traveled by the box is d=60 m. The force…

Q: 1. A pitcher throws a ball at 90 mi/h, and the catcher stops it in her glove.(a) Is the work done on…

A:

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: 40. A car without gas is pushed along a horizontal concrete road with a constant amount of force by…

A: From Newton's laws of motion we have,  F=ma Here, F is the applied force, m is the mass and a is the…

Q: When you throw a ball, the work you do to accelerate it equals the kinetic energy the ball gains. If…

A: Work done on the ball is equal to the kinetic energy.The kinetic energy is given by,K=12mv2The…

Q: An elevator is lifted by its cables at a constant speed. Is the total work done on the elevator…

A: If the elevator lifted by cables on the elevator two forces are acting 1) gravitational force…

Q: 2. While training for the upcoming UAAP season, a 60-kg athlete does 30 pushups in a minute,…

A:

Q: Can work ever be negative? Group of answer choices Yes. If the force and displacement have opposite…

A: According to question we need to find--- work done ?

Q: Early in October, you go to a pumpkin patch to select your Halloween pumpkin. You lift the 3-2kg…

A:

Q: person pushes a box up an incline with constant force, and after calculating how much work they did…

A: Given work done by the person is greater than the work done by gravity. When we move a body on an…

Q: Consider holding a heavy chair at arm's length for 3 minutes. At the end of this interval, your arms…

A: we can define work as follows: W=Fd Where,  F is the force W is the work done D is the displacement

Q: 7. A body of mass 40 Kg covers a distance of 50 m in 5s starting from rest under the influence of a…

A: Given data, Mass of the body m = 40 kg Distance s= 50 m Time t = 5 sec Starting from rest u = 0 m/s…

Q: 1. Why are we more tired after running upstairs in a few seconds than after walking upstairs in a…

A: Power is the rate at the energy being transferred or  energy being converted from one form to…

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

A:

Q: Explain why there are similarities or differences between the work done along the vertical and the…

A:

Q: 1. How much work is done by a force F= 9x^2+2x, with x in meters, that acts on a particle as it…

A:

Q: A horizontal force of 200 N is applied to a 55-kg cart across a 10-m level surface. If the cart…

A:

Q: Which requires more work: lifting a 50.0 kg crate a vertical distance of 2.0 meters or lifting a…

A: Given: M1=50kg M2=25kg h1=2m h2=4m Now, Work was done to lift 50 kg crate (2m). Work was done to…

Q: It takes 3 s for 25 g car to go down a 10 degree incline for 1 m. ? How much work was done by…

A:

Q: 3. Suppose you lift a 20 kg box by a height of 1.0 m. a) How much work do you do in lifting the box?…

A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…

Q: What is work done by a ball having a mass of 5.4 kg and is lifted to a distance of 1.6 m. [g =…

A: We know thatChange in potential energy is called workdone.W=-∆UW=-Uf-UiW=Ui-UfPotential energy of…