An object that has kinetic energy must be   (A) Moving (B) Falling (C) At rest (D) None of these   Please explain the correct answer. Thank you.

Q: An airplane of mass 1.50 x 104 kg is moving at 60.0 m/s.The pilot then increases the engine’s thrust…

A: Mass of the airplane = 1.50 X 104 kgInitial Speed of the airplane = 60 m/sThrust force = 7.50 X 104…

Q: (a) Find the kinetic energy of a bullet of mass 5.00 g traveling at a speed of 295 m/s. (b)…

A: A)Mass of bullet (m) = 5 g velocity of bullet (v) = 295 m/s

Q: Mechanical energy is defined as the sum of both the potential energy and the kinetic energy of an…

A:

Q: A proton (mass m = 1.67 × 10-27 kg) is being accelerated along a straight line at 2.70 × 1011 m/s2…

A:

Q: Consider two blocks attached by a string over a pulley. On the right-hand side of the pulley, block…

A:

Q: You drop a ball of weight 5.00 N from rest from a certain height above the floor into free fall.…

A: The potential energy is a type of energy which depends upon the relative position of the body. The…

Q: 2. A 5.75-kg object passes through the origin at time t = 0 such that its x component of velocity is…

A: a) we have given that m=5.75 kg Vx= 5.00 m/s Vy=-3.00 m/s V2=Vx2+Vy2V2=(5)2+(-3)2=25+9=34Now,…

Q: What kinetic energy would be calculated if the cart had carried 8kg and had been released from a…

A:

Q: What is the primary energy transformation involved in each the following situations: (a) An…

A: The three primary energy transformations are as follow- Kinetic energy, Potential energy, and Work…

Q: The figure shows a block of mass 10 Kg. Determine what will be the work done by the force F that…

A: Given, Mass, m= 10 kg, height, h= 18m, and friction coefficient, μ=0.3.

Q: The engine of a Honda Civic has a power of 1.32 x 105 W (176.88 hp).   a) How much work does this…

A: Power is defined as the energy transferred per unit time. Since this energy is consumed in work…

Q: QUESTION 3 What is the total mechanical energy of an object that has a potential energy of 65 J and…

A:

Q: Decide how the objects in the following table would be listed, if they were listed in order of…

A: 1)  Mass , m = 64 kg  velocity , v = 9.4 m/s 2) Mass , m = 70 kg  velocity , v = 9.4 m/s 3) Mass , m…

Q: A 71 kg student traveling in a car with a constant velocity has a kinetic energy of 1.8 x 10^4 J.…

A: We know thatK.E=12mV2V=2(K.E)mHereV=velocity of objectK.E=kinetic energy of objectm=mass of object

Q: A rock is thrown straight up from the surface of the Earth. Which one of the following statements…

A: In the given question, We have to discuss about when we throw any object straight up from the…

Q: Is the answer I choose the correct one?

A: GivenWeight of the car W = 8000 NInitial velocity u = 12 m/sFinal velocity v = 0 m/sTime taken t =…

Q: An athlete with a mass of 63.5 kg is in a cross country race, and at one instant he has a speed of…

A: Write down the values using a suitable variable. Here. m signifies athlete mass and v signifies the…

Q: A 140 g baseball is pitched and crosses the plate at 38 m/s. The batter swings and hits the ball, so…

A:

Q: Which has greater kinetic energy? A) a car traveling at 30 km/hr. B) a car of half the mass…

A: KE=1/2mv^2KEA=1/2(m)(30)^2=450(m) JHalf the mass and add the new velocityKEB=1/2(m/2)(60)^2=900(m) J…

Q: How fast would a(n) 82 kg man need to run in order to have the same kinetic energy as an 8.0 g…

A: Mass of man (M) = 82 kg mass of bullet (m) = 8 g = 0.008 kg velocity of bullet (v) = 430 ms

Q: An airplane of mass 1.50 × 104 kg is moving at 60.0 m/s. The pilot then increases the engine’s…

A: (a)   There are two forces, that are the engine’s thrust and the air’s resistive force, act on the…

Q: Which of the following quantities has the same dimensions as kinetic energy, mv? Note: [a] = [g] =…

A: Dimensions of 1/2 mv2 = [M L2 T-2]

Q: Which of the following statements about the "Conservation of Energy" is NOT true? A) The total…

A: Conservation of energy is one of the fundamental theorem in science which helps us to understand and…

Q: In 1995, Karine Dubouchet of France reached a record speed in downhill skiing. If Dubouchet’s mass…

A: Given, Dubouchet's kinetic energy, E= 9.96*104 J Her mass, m= 51 kg

Q: As a simple pendulum swings back and forth, the forces acting on the suspended object are the…

A: In this question, we have been asked that which of the forces act on pendulum and which of these…

Q: For exercise, an athlete lifts a barbell that weighs 400 N from the ground to a height of 2.20 m at…

A: In this question we are given that an athlete lifts a barbell that weighs 400 N from the ground to a…

Q: Which of the following statements correctly describes the relationship between an objects kinetic…

A:

Q: Which term refers to the transfer of energy by a force acting on an object as it is displaced? a.…

A: Given data: A force is acting on the object Object is displaced

Q: There are 2 cars. Assuming the first car has a mass of 1000 Kg, which has greater kinetic energy? a.…

A: given: mass of first car =1000 kg

Q: How much total mechanical work does a weightlifter do in 10 repetitions of lifting (and lowering)…

A:

Q: An object travels at a speed of 4.0 m/s. It has 24 J of kinetic energy. What is the kinetic energy…

A: Kinetic energy is stated as energy passed by moving body. Its value is equal to half the value of…

Q: 1. Ben is walking with his backpack. If Ben is 65 kg, walking at a rate of 2 m/s and his backpack is…

A: kinetic energy =12mv2   here  Ben is 65 kg  backpack is 0.5 kg both have velocity 2 m/s

Q: The kinetic energy of a 1000.01-kg car is 6.201 × 105 J. How fast is the car moving?

A: Given data:  Mass (m) = 1000.01 kg Kinetic Energy (KE) = 6.201×105 J Required: Speed of the car (v)

Q: What is the speed of a 55 kg woman running with a kinetic energy of 1600 J? a. 7.77 m/s c. 7.63 m/s…

A: Given: The mass (m) of a woman is 55 Kg. The kinetic energy (K.E.) of the woman is 1600 J.…

Q: Cart Mass, mc  . 284 kg Angle, θ 49 degrees Distance, d . 75 m Equilibrium . 240 Velocity 1 . 664…

A: given: mass m =0.284 kg average velocity v = 0.669 m/s

Q: 1)

A: Answer

Q: The kinetic energy of an object of mass m, moving with a velocity of 5 ms1 is 25 J. What will be its…

A: Given data:  Mass = m Original velocity (v) = 5 m/s Original kinetic energy (KE) = 25 J New velocity…

Q: The energy needed to increase the speed of a certain car from 22 m/s to 44 m/s is 240 kJ. At what…

A:

Q: Calculate the ratio of the mechanical energy at B and mechanical energy at A (EB/EA) and (EC/EB).…

A:

Q: If the speed of an object is tripled and the mass is halved, by what factor does the kinetic energy…

A: The initial kinetic energy of an object is given as, K1=12mv2 Here, m denotes the mass and v denotes…

Q: Find the kinetic energy of a car with mass 1000kg moving at speed of 30 m/s. *   A. 15 000 J B. 900…

A: Given data:  Mass (m) = 1000 kg Speed (v) = 30 m/s Required: Kinetic energy (KE)

Q: 5. Calculate the kinetic energy of a 4.0 g bullet moving at 1000 m/s. A 1000 J B 2000 J 3000 J D…

A: A particle of mass m moving with velocity v,  The kinetic energy of the particle is (K.E)=(1/2)*m*v2

Q: The figure shows a block of mass 10 Kg. Determine what will be the work done by the force F that…

A: The free body diagram for the problem is shown in the fig below The work done by a force F is W→=F→…

Q: Rank the following bodies in order of their kinetic energy, from least to greatest along with…

A:

Q: Chapter 07, Problem 001 A proton (mass m = 1.67 x 10 27 kg) is being accelerated along a straight…

A:

Q: What is the mass of a toy that is moving at 2.1 m/s with a kinetic energy of 48 J? Select one: O a.…

A:

Q: A 8000-N car is traveling at 14 m/s along a horizontal road when the brakes are applied. The car…

A: Ans. (d) 80 J   kinetic energy =12mv2given,weight, w = 8000 Nacceleration due to gravity, g =9.8…

Q: A block with an initial kinetic energy of 4.0 J comes to rest after sliding 1.0 m. How far would the…

A: Given - If the initial kinetic energy of block was K1,i = 4.0 J , then the distance travelled by the…

Helmholtz Free Energy

The Helmholtz free energy is a thermodynamic potential used to calculate the measure of useful work from a closed system. This system is kept at constant temperature and volume. German physicist Hermann Helmholtz introduced this concept in 1882.