A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving down at a steady speed of 5.0 m/s for 8.0 m. Use g = 10 m/s2. Match the answers with questions.mv the final kinetic energy of the box (Kf)А. -320 Jv the change in kinetic energy of the box (AK)В. 20 JC. 320 JD. 50 JE. -20 JF. -50 JG. OJ

Answered: Image /qna-images/answer/94cf02ea-82cf-4f98-9514-9a0c109ca03c.jpg

A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving down at a steady speed of 5.0 m/s for 8.0 m. Use g = 10 m/s. Match the answers with questions. v the final kinetic energy of the box (Kf) A. -320 J - v the change in kinetic energy of the box (AK) В. 20 J C. 320 J D. 50 J E. -20 J F. -50 J G.OJ

A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving down at a steady speed of 5.0 m/s for 8.0 m. Use g = 10 m/s. Match the answers with questions. v the final kinetic energy of the box (Kf) A. -320 J - v the change in kinetic energy of the box (AK) В. 20 J C. 320 J D. 50 J E. -20 J F. -50 J G.OJ

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Related questions

Q: A 18-kg child slides down a 4.0m-high playground slide. She starts from rest and her speed at the…

Q: This question has multiple versions. Read carefully! A model helicopter carries a 10kg package from…

Q: One 50.0 kg cart is lifted straight up 9.0 m above the ground. An identical cart is pulled up a…

A: Given mass of cart = 50.0 kg this cart is lifted straight up by 9.0 m second identical cart is…

Q: A soccer ball is moving through the air in free fall. At a certain height it has a total mechanical…

Q: A weighlifter lifts a 50-kg barbell a vertical height of 2.0 m in 5.0 s. What is the average power…

Q: A 5 kg book is held 10 meters above the floor. How much gravitational potential energy does it have?…

A: Mass(m) = 5 kg Height(h) = 10 m Potential energy (E) = mgh g = gravitational acceleration g = 9.8…

Q: Initial O v = 0 Final Y = 0 A 14 kg ball initially at rest rolls down a 142 m tall hill. When the…

A: Given: The initial speed of the ball is 0 m/s. The final speed of the ball is 31.1 m/s. The height…

Q: A 0.6 kg box moves up a ramp with some initial speed. It reaches a vertical height of 3.5 m before…

A: Solution: Given: m = mass of box = 0.6 kg g = gravitational acceleration = 10 m/s2 h = height of…

Q: An accelerating object of mass m=2 kg is fired with an initial speed v=8 m/s at a starting point. If…

A: Given data: Mass m =2 kg Velocity v=8 m/s2. Final Kinetic energy =268 J

Q: A 2.56 kg cart moving along a horizontal track in the positive x direction has a changing force…

Q: A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving up at…

A: Given:- A box of mass m = 4.0 kg The elevator is moving up at a steady speed u = 5.0 m/s The…

Q: A 2.00-kg (20.0-N) stone is dropped from a height of 5.0 m, and strikes the ground with a velocity…

A: Weight of stone (w) = 20 N Mass of stone (m) = 2 kg Initial height (h) = 5 m Velocity with which the…

Q: A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving up at…

Q: A ball of mass 100 g, is dropped from a height of 22 m and moving vertically down. Ignoring the air…

A: Solution: Given: m = mass of ball = 100 g = 0.100 kg g = gravitational acceleration = 9.81 m/s2 h1 =…

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: 2876 kg elephant from Asia (Elephas maximus) pushes against a coconut tree (Cocos nucifera), which…

A: Here elephant is the agent which exerts external force. There is no conservative as well as non…

Q: The (non-conservative) force propelling a 1.50 x 10³-kg car up a mountain road does 8.80 x 106 J of…

Q: 0.8 0.6 0.4F 0.2- 0.25 0.50 0.75 1.00 Position, x (m) Force, F (N)

A: The area under a force-displacement graph for a varying force is given by the area under the graph…

Q: A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving up at…

A: Given(s): Mass of the box, m=4.0 kg Height raised, h=4 m Moving at a constant speed of 5.0 m/s.…

Q: A 0.3-kg ball is thrown with a speed of 10.3 m/s at an angle 32.5 degrees. How high does it go? To…

Concept explainers

Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.

Question

A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving down at a steady speed of 5.0 m/s for 8.0 m. Use g = 10 m/s2. Match the answers with questions.
m
v the final kinetic energy of the box (Kf)
А. -320 J
v the change in kinetic energy of the box (AK)
В. 20 J
C. 320 J
D. 50 J
E. -20 J
F. -50 J
G. OJ

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: Given data

VIEW

Step 2: Calculation of kinetic energy,

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

A 5.00 gram bullet moving horizontally with a speed of 400 m/s collides with a wooden block. After moving 2.00 cm into the block the bullet stops moving. Was work done on the bullet? If so describe the type of work and the force that did the work. a. yes, negative work, force is in the opposite direction as the initial velocity of the bullet b. yes, positive work, force is in the same direction as the initial velocity of the bullet c. yes, positive work, force is in the opposite direction as the initial velocity of the bullet d. No work was done on the bullet e. yes, negative work, force is in the same direction as the initial velocity of the bullet
A firefighter slides down a pole with constant speed. What can you say about the energy?
question 8
I need help with these questions
X Problem 1. An NFL punter punts a 0.02 kg football 100 meters into the air. A. What is the initial potential energy of the ball when it's at its peak? 0.02 x 9.8 x 100 = 19.6 j What is its final kinetic energy before it hits the ground? 1 o add speaker notes B. C. What is the velocity of the ball before it hits the ground? در نگاه U EVA
You throw a basketball straight up into the air with an initial velocity of 5.6 m/s. The ball leaves your hand 1.2 meters above the ground. It moves upwards, stops, and then goes all the way down until it hits the ground (below the height you threw from).A. Use conservation of energy (and not the kinematics equations) to calculate the velocity of the ball the instant before it hits the ground.
24. A skier of mass 70 kg is pulled up a slope by a motor-driven cable. How many horsepower output must a motor have to pull him 100 m up a 30° frictionless slope at a constant speed of 2 m/s? a.700 b. 0.94 c. 746 d. 1.06 a b d
c) Figure 1 shows a small cart of mass 5 kg moving on the frictionless track with a speed of 10 ms¹ along AB, down to C, and climbing up to D and E. Calculate: i. ii. iii. A 10 m s B 5 m 2 m Figure 1 The kinetic energy of the cart as it moves along AB. The speed of the cart at point C. The kinetic energy of the cart as it moves along DE. D E
A 72 kg skiier goes down a 45 meter tall hill and reaches 26 m/s at the bottom of the hill. What is the percentage of the total energy that was lost to friction? A.17% B.23% C.52% D.46% E,31%
1. a brick with mass 30 kg rests a top a 12 m tall wall. What is the brick's gravitational potential energy relative to the ground? a. 2400 J b. 360 J c. 240 J d. 3600 J 2. A brick with mass 20 kg rests atop a 12 m tall wall. The brick is nudged off the wall, and falls to the ground. How fast will the brick be going as it hits the ground? Neglect air resistance. a. 12 m/s b. 120 m/s c. 0 m/s d. 15.5 m/s
A block of mass 2.0 kg is moving to the left and changes its speed from 1.0 m/s to 3.0 m/s. Match the answers with questions. What is its initial kinetic energy? A. -8.0 J What is its final kinetic energy? B. -4.0 J What is the change in kinetic energy? C. 1.0 J D. 8.0 J E. 4.0 J F. 9.0 J G. none of the given
A 50 kg skier leaves the top of a 10 m high frictionless slope (point "a") from rest and reaches the bottom of the slope (point "") with a speed v,. He subsequently continues sliding on level ground to a full stop to a point "c" due to friction (i.e. 0.2 on the level ground). a. Write an expression for the total mechanical energy of the skier at point "a". b. Write an expression for the total mechanical energy of the skier at point "b". c. Use the Work-Energy Theorem to determine the work done from point “b" to point “c".