True or False: Reducing the weight of a car will reduce how much energy the car needs tomove.Explain your answer.True because as mass decreases, the amount of kinetic energy increases.False because as mass decreases, so does the amount of kinetic energyFalse because as mass decreases, the amount of kinetic energy increases.True because as mass decreases, so does the amount of kinetic energy

The energy required to move the car is directly proportional to the mass of the car.

Answered: True or False: Reducing the weight of a…

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)...

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Review A Bookmark Stewart, Justin Physics: Unit 3- Energy / 1 of 4/ Activity 1 Task: Potential & Kinetic Energy Activity 1 of 5 At what point in this roller coaster does the roller coaster have the most gravitational potential energy? A roller coaster starts from rest at point A. The mass of the cart with O A. Point A riders is 900 kg. The motor of the roller coaster does work to get the car up the hill to point B. From point B, the car relies on energy transformations to make it through the rest of the shown portions of the roller coaster. [g=9.8 m/s²] B. Point B C. Point C O D. Point D A
Garfield and Jon fought. To patch things up with Jon, Garfield caught a mouse who was eating Jon’s favorite cheese in the last few days. While the mouse was sleeping on a rug, Garfield put a cage on it and drag the rug towards Jon with a constant horizontal force of 4 N at a constant speed . If Garfield’s force did work at a rate of 8 W, How fast was he pulling on the rug? How much work did Garfield do in 5 s?
Calculate Kinetic Energy, Potential Energy, Rest Energy and Work using the following information. Force = 500,000 cN %3D Mass = 200,000 g Speed (velocity) = 5 m/s %D Height = 1500 mm %3D Distance = 3 miles (1 mile = 1.6 km) %3D %3D We also know that acceleration of gravity, g = 10 m/s^2 and %3D speed of light, c = 3 x 10^8 m/s. First do all necessary unit changes for all the above quantities and then show all work to calculate Work, KE, PE and RE. BIU A Paragraph + v II II II II II II II II II II II II II II II II II II II II lili II II II II II II II II
Practice Worksheet/Reference Sheet Information: Consider a 2-kg bowling ball that sits on top of a building that is 40 meters tall. It falls to the ground. Think about the amounts of potential and kinetic energy the bowling ball has: as it sits on top of a building that is 40 meters tall. as it is halfway through a fall off a building that is 40 meters tall and traveling 19.8 meters per second. as it is just about to hit the ground from a fall off a building that is 40 meters tall and traveling 28 meters per second. Question 2 What is the mass of the bowling ball is ____ The height of the building is ______ Question 3 What is the gravitation constant value here on earth? Question 4 Does the bowling ball have more potential energy or kinetic energy as it sits on top of the building? Why? Question 5 Does the bowling ball have more potential energy or kinetic energy as it is halfway through its fall? Why? Question 6 Does…
What is absolute zero? What is kinetic energy and potential energy? Give examples. You have a ball in your hand above the ground at rest which you then drop. What energy is involved in each part of this situation and how do we know that total mechanical energy has been conserved? Explain with and without air resistance present. A boulder and a pebble are sitting on a cliff, which has greater gravitational potential energy and why? A cheetah and a person are racing, both has the same mass, which has a greater kinetic energy and why? What is temperature? How does an objects temperature relate to motion of the molecules? What is heat? Describe thermal expansion/contraction. When temperature rises, which one occurs? I have a 2kg ball on a cliff 10m high. If the gravitational acceleration on this planet is 4m/s2, what is the GPE of the ball? A 2kg ball is rolled at 3m/s. What is the KE of the ball? What is work? And what are the units for work? How does this…
Garfield and Jon To patch things up with Jon, Garfield caught a mouse who was eating Jon’s favorite cheese in the last few days. While the mouse was sleeping on a rug, Garfield put a cage on it and drag the rug towards Jon with a constant horizontal force of 4 N at a constant speed ?. If Garfield’s force did work at a rate of 8 W, How fast was he pulling on the rug? How much work did Garfield do in 5 s?
Person A and Person B are both using the same amount of work to lift something. Person A takes half as much time to do it. Using the formula for power, explain which person has the most Power and why.
Energy of a Roller Coaster Car 500 450 400 350 2 300 250 200 150 100 50 4 6 8 10 Time (s) Mechanical Energy ...... Potential Energy -- Kinetic Energy Which statement is best supported by the graph? Your answer: only mechanical energy is conserved only potential energy is conserved mechanical energy and potential energy are both conserved neither mechanical energy nor potential energy are conserved Energy (kl)
When plotting a particular kind of energy on a graph, when can we use the equation for the energy (for example, mv² for kinetic energy) to determine the shape of the energy graph? Never, because we have to take into account the other kinds of energy in the system to determine the shape Sometimes, if there are only two kinds of energy in the system Never, because the shape of an energy graph is not related the equation for that kind of energy Sometimes, if the horizontal axis on the graph is labeled with the indicator of the energy type Always, because the shape of a graph always depends on the equation, even if the variables in the equation do not appear on the graph Always, because we are allowed decide where to place y = 0
How high can we jump? The maximum height a typical human can jump from a crouched start is about 60 cm. By how much does the gravitational potential energy increase for a 66-kg person in such a jump? Where does this energy come from? Draw free-body diagram.
An object moves along the x axis, subject to the potential energy shown in the figure. (Figure 1) The object has a mass of 2.4 kg and starts at rest at point A. A) What is the object's speed at point B? B) What is the object's speed at point C? C) What is the object's speed at point D? D) What are the turning points for this object? Check all that apply. Point A Point B Point C Point D Point E
Answer the following question. explain each 1. What two conditions are to be satisfied for work to be done? 2. How much work is done when lifting an object? 3. Why is more work done by a boy while climbing up a hill that walking the same distance in a level road?

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