A ball has a total energy of 140 J when it is dropped from rest from a height of 20 meters. Assuming energy is conserved, when the ball is 5 meters above the floor: Q1: What is the total energy of the ball? Q2: What is the potential energy of the ball? Q3: What is the kinetic energy of the ball? Q4: If air friction cannot be ignored, how will the potential energy and the kinetic energy of the ball at 5 meters be affected?

Q: 2. A 3 kg object moves under the influence of the potential energy x² 5(x) = (x − 4)³ – - +5 Shown…

A:

Q: Q1: A person weighs 155 lbs and is walking 3.1 miles per hour. How much kinetic energy does the…

A:

Q: A 1400kg car accelerates from 5 m/s to 25 m/s .Then net work done by the car is?

A: Given Mass m = 1400 kg Initial velocity u = 5 m/s Final velocity v = 25 m/s

Q: A 50.0 kg bicyclist on a 10.0 kg bicycle speeds up from 5.00 m/s to 10.0 m/s. What was the total…

A: Given : m1 = 50 kg m2 = 10 kg vi = 5 m/s vf = 10 m/s

Q: object of mass 1kg has a velocity of (i2+j-4)m/s. What is its kinetic energy?

A: Given Mass m = 1 kg Velocity v̅ =( 2î + 4ĵ ) m/s

Q: 1. An automobile with a mass of 1200 kg travels at a speed of 90 km/h. a) What is its kinetic…

A: QUESTION 1 SOLUTION: PART (a) solution: concept used:

Q: Two cannonballs were fired at the same speed. If the cannonball 2 has a mass that is twice the mass…

A: Let's start with the things given,

Q: Suppose an elephant has a mass of 3050 kg. How fast in meters per second does the elephant need to…

A:

Q: What is the kinetic energy of a 20 KG dog that is running at a speed of 8.2 m/s (about 18 mi/h)

A: m= 20 kg v= 8.2 m/s kinetic energy= K

Q: One of the tallest radio towers is in Fargo, North Dakota. The tower is 629 m tall, or about 44…

A: Given data:   Height (h) = 629 m The gravitational potential energy (U) = 2033 J Required:  The mass…

Q: how much work is done in raising a 42.3 kg crate a distance of 1.5 m above a storeroom floor? What…

A: Given: Mass of the crate m = 42.3 kg height h =1.5 m

Q: At what speed does a 1900 kg compact car have the same kinetic energy as a 20000 kg truck going 24…

A:

Q: A 3 kg ball falls from height of 14 m. What willbe potential energy of the ball after 1 second?  Use…

A: given data,  mass of the ball , m = 3 kg initial height , h = 14 m  gravitational acceleration , g =…

Q: Suppose that 3 J of work is needed to stretch a spring from its natural length of 32 cm to a length…

A: spring stretch = 40cm - 24cm = 16 cm = 0.16m. Hence the force acts over a distance 0.16 m, with the…

Q: 1. A1 kg rock is at a height of 100 meters. a. What is the rock's gravitational potential energy at…

A:

Q: The gravitational potential energy of a 0.120 kg bird in a tree is 6.60 J. What is the height of the…

A: The expression for the gravitational potential energy is written as, Here, m, g and h represent the…

Q: An object of Mass 40 kg is raised to a height of 5m above the ground what is its potential energy?…

A:

Q: A mass is under the force by 54.0 N-m3 F(x) x3 a. What is the work done to move the mass from x =…

A:

Q: Suppose you throw a 0.48-kg ball with a speed of 10.8 m/s and at an angle of 28.5° above the…

A:

Q: what speed does a 1100 kg compact car have the same kinetic energy as a 20000 kg truck going 21 km/h…

A:

Q: A 0.23-kg stone is held 1.1 m above the top edge of a water well and then dropped into it. The well…

A:

Q: The total energy of an object at rest 10 m above the ground on a building is 200 J. The object is…

A: Given , Total energy at 10m above the ground = 200 J Height ,h = 10m acceleration due to gravity, g…

Q: At NASA's Zero Gravity Research Facility in Cleveland, Ohio, experimental payloads fall freely from…

A: Given that, Payloads fall freely from rest in an evacuated vertical shaft through a distance of 132…

Q: You reach out the second story window, which is 5 m above the sidewalk, and throw a 0.2 kg ball…

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

Q: How much potential energy does a person of mass 68 kg have if they are standing at the top of a…

A: Given  Mass m = 68kg Height h = 57.9m gravitational acceleration g = 9.8m/s2 Potential Energy U = ?…

Q: 2. Juanito, a Grade 9 student, lifts a 5 kg book from the floor into a cabinet that is 3.2 m high…

A:

Q: A wagon loaded with iron blocks is pushed up an inclined plane to its highest point. The total mass…

A: Given data,        Total mass of the wagon   =  m       Acceleration due to gravity  =  g…

Q: Suppose that 4 J of work is needed to stretch a spring from its natural length of 26 cm to a length…

A:

Q: The height of Niagara Falls on the American side is 51 m. (a) Calculate the potential energy of 1.0…

A: (a). The potential energy of 1.0 g of water at the top of the falls relative to the ground level is,

Q: A 2.5kg ball is about to roll off the edge of a 1.7m tall table. What is its current potential…

A: We know that, Potential Energy :PE = m x g x h Where,m = Mass (2.5kg) g = Acceleration of…

Q: At the tallest drop in the rollercoaster, the cart has 500 J of potential energy and 0 of kinetic…

A: Required : Total mechanical energy at the end of the rollercoaster.

Q: An object of mass 40 kg is raised to a height of 5 m above the ground. What is its potential energy?…

A: Gravitational mechanical energy is given by the expression : W = mgh h = Vertical displacement = 5…

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

A:

Q: An object has 90,000 J of kinetic energy and is moving at 12 m/s. a) What is the object’s mass in…

A:

Q: To stretch a spring a distance of 28 m, 23 J of work is done. (a) What is the increase in potential…

A: Given data:  Distance "x"= 28m  Work done "W"= 23J .     Formula :       F = 1/2*k*x²

Q: Thor stands on top of the Stark Tower (425 m) and fights his brother Loki using Mjolnir, his hammer.…

A: Given: Height of stark tower h = 425 m.  Mass of mjolnir M = 300 billion elephant = 4.5×1015 kg.

Q: What is the kinetic energy of a 1 kg ball thrown to a height of 10 meters?. Single choice.

A:

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: A 3.2 kg ball that is moving straight upward has 17 J of kinetic energy and its total mechanical…

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

Q: A 0.59-kg particle has a speed of 5.0 m/s at point A and kinetic energy of 8.5 J at point B. (a)…

A: Given Data:- The mass of the particle is m = 0.59 kg. The speed of the particle at point A is vA =…

Q: A force of 800 N stretches a certain spring a distance of 0.200 m. a. What is the potential energy…

A: It is given that F=800 Nx=0.2 m

Q: A 0.25-kg stone is held 1.4 m above the top edge of a water well and then dropped into it. The well…

A: Consider mass(m) is dropped from height(h1) into the well of depth(h2).

Q: How much potential energy does a person of mass 92 kg have if they are standing at the top of a…

A: Given data: Mass of person (m) = 92 kg Height of building (h) = 56.2 m Acceleration due to gravity…

Q: You throw a ball into the air. You let the ball go at a height of 1.5 m, and the ball is moving at a…

A: Initial Height , h = 1.5 m Initial velocity , u = 8 m/s Mass , m =0.5 kg To find = a) Initial Total…

Q: 34. Which graph best represents the relationship between the gravitational potential energy PE with…

A: 34) Let the mass = m let the height = h let acceleration due to gravity = g