8. A pendulum is pulled to one side and released. It swings freely to the opposite side and stops. Which of the following might best represent graphs of kinetic energy (Ex), potential energy (Ep) and total mechanical energy (Er) Tume Tume A) B) C) D)

Q: 2. Analysis of the cart's kinetic and potential energy as it travels down the incline. a) Take the…

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Q: 1. How much work must a spring with a constant of 8.3 x 104 N/m do to stop a 1,520-kg vehicle…

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Q: 17. What is the spring constant of a spring that stores 25 J of elastic potential energy when…

A: The spring constant(k) of a spring that stores 25 J of Elastic potential energy(E) by 7.5 cm. given,…

Q: When friction acts between an object and the system, how does this change the balance of kinetic and…

A: By observing the option we will answer the given question.

Q: At which point would a skateboarder have the most kinetic energy? a) At rest at the top of a…

A: The kinetic energy of a moving object is given by;Where;m is the mass of the skateboarderv is the…

Q: 9. can be stated as the net work done on an object is equal to the change in the object's kinetic…

A: Question to answer :   ___________ can be stated as the net work done on an object is equal to the…

Q: A roller coaster car starts from rest at the top of a large hill as shown below. Where does the car…

A: Given data:  Initial velocity of Roller coaster (v0) = 0 m/s Start from top of the hill

Q: done

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Q: How much mechanical work is required to mov feet to your heart, approximately 1.0m higher? A) 1 J B)…

A: Given:- 13 )  The mass of the blood m = 1.0 kg  [ Given ]  The height h = 1.0 m  [ Given ]  Find:-…

Q: Two floors in a building are separated by 4.1 m. People move between the two floors on a set of…

A: Given , Difference between height of two floor of a building(Δh)= 4.1m Mass of backpack(m)= 3 kg…

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Q: 1. Refer and use figure 1 and 2. Calculate the magnitude of force needed to displace the block by…

A: The given graph 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: 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. Calculate the work done by a force of 30 N in lifting a load of 2kg to a height of 10m (g =…

A: Required work done by given forces to displace the objects.

Q: A girl with a mass of 17.46 kg on a swing. Her friend gives her a push such that the maximum height…

A: Given: The mass of the girl is 17.4 kg. The maximum height of a girl from the ground surface is 0.39…

Q: When the speed of your car is doubled, by what factor does its kinetic energy increase? a. sqrt of 2…

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

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Q: Now Jed and Kadia tackle a homework problem: An object of mass m, = 13 kg and velocity v, 5.5 m/s…

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Q: The average power output of the human heart is 1.33 watts.(a) How much energy does the heart produce…

A: Power is Time is Note:Find:(a) Energy produces by human heart in one day.(b) Estimate the height a…

Q: 12. When you go upstairs, you a. do more work when you walk than when you run b. do less work when…

A: 12.) Work depends on force and displacement only as force acting during running or walking is weight…

Q: It changed but I tried putting the right input but it didn’t work so now I have to find what equals…

A: Value of the gravitational constant should always 9.8 m/ s2. So put g=9.8 m/s2

Q: 1. A pickup truck traveling with an Initial Kinetic Energy of 32000 J skids to a stop i) Determine…

A: Given Initial kinetic energy is KEi =32000 J Final kinetic energy is KEf =0 Find the work done.

Q: . An alien spacecraft wishes to visit Earth, but in order to do so it must first escape its hom…

A: The velocity of an object refers to its rate of change of position as a vector quantity. escape…

Q: It takes 180J of work to compress a certain spring 0.15 m. (a) What is the force constant of this…

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Q: 4. a child on a swing reaches a maximum height of 5m above her lowest position. What is the speed of…

A: Given: Child Maximum height, h = 5m To find: Speed of thee swing at the lowest point

Q: A person picks a 1.00 kg box of macaroni from off the shelf and lowers it 0.77 m into a shopping…

A: Given:-  The mass of the box of macaroni is m = 1.0 kg. The distance the person put that box is d =…

Q: 5. What will be the work done in holding a 25 kg iron plate for 25 seconds? [A] 25 j [B] 1j [C] 0…

A: Here is the step-by-step explanation Step 1: Understand the Concept of Work:​The work done (W) is…

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-kg block slides () along a rough () horizontal surface. The coefficient of kinetic friction for…

A: Given : m = 5 kg μk = 0.40 v = 3.5 m/s

Q: tus: QUESTION 15 The figure shows an overhead view of three particles on which external forces act.…

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Q: A 1900 kg car is initially traveling 20 m/s. The driver presses down on the accelerator pedal and…

A: The energy possessed by an object , which is in motion , with velocity v is known as the kinetic…

Q: 3.The Work-Energy Principle states that work is equal to the change in kinetic energy. What unit…

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Q: From the second law of motion and the equation for velocity EF ΣΕ = ma v² = + 2a(x2-11) Derive the…

A: Given:F→net = ma→   ....1v2 = vo2 + 2ax2−x1   ....2Asked:Use equation 1 and 2 to derive Work−Energy…

Q: A student drags a 3 kg box 5 m across a rough floor with a force of 40 N. A frictional force of 10 N…

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Q: 1. Two boys riding on a bicycle. The boys have the same speed. Which of the boys exerts more energy…

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Q: 1] A 20kg mass hangs at rest at end of a pendulum rope. Assume that you push it up at 0.6m above…

A: Mass of the Bob is 20kg  Time taken from A to B is 0.6s Vertical height (h) = 0.6 m

Q: erson of mass 60 Kg climbs a tall building (height 120 m) at a steady pace in 18 minutes. What is…

A: Given: mass = 60 kg height = 120 m time = 18 minutes Need to find the average power generated by the…