The heavy ram of a pile driver and the stretched bow possess stored energy of position = POTENTIAL ENERGY. The ram of a pile driver has mechanical energy When held up, it has mechanical energy in the form of potential energy.

What happens to the kinetic energy and gravitational potential energy of a ball during free fall?

If both of these balls are traveling down a bowling lane at the SAME speed, which one would have more kinetic energy?

At which two points on the pendulum, is the pendulum experiencing the greatest potential energy?

Energy, Work & Power Unit 6 Learning Objectives You will learn the relationship between work and energy change kinetic energy = ?mv 2 gravitational potential. Kinetic Energy KE = ? mv 2 So stopping distances increase by four times when the speed is doubled because…….. The amount of potential energy of an object is equal to the amount of work done to get an object to that position.

Conservation of Energy The law of conservation of energy states that energy cannot be created or destroyed.

For a ball moving down a ramp, in the absence of friction, the gravitational potential energy at the top of the ramp would be equal to the kinetic energy at the bottom of the ramp. Work, Potential Energy, Kinetic Energy & Power F The force, F, pushes the box for a short distance. Work and Energy Definition of Work (W) ? ? Work is done when a force is exerted on an object AND the object moves in the direction of the force (or one. Work, Power, Energy Work Vocabulary Work (force x distance) Kinetic Energy ( ? mass x velocity 2 ) Potential Energy( mass x g x height) Review P = mv.

Chapter 5 – Work and Energy If an object is moved by a force and the force and displacement are in the same direction, then work equals the product of. Chapter 5 Work, Energy, Power Work The work done by force is defined as the product of that force times the parallel distance over which it acts.

Work, Power and Momentum PSC1341 Chapter 3 Work Work = Force times Distance Force is a vector quantity and only that part of the force that is parallel. Of course, there are many, many different kinds of energy which we haven’t mentioned specifically. The understanding that the work done on a system by an external force changes the energy of the system is known as the Work-Energy Theorem. This relationship is documented on the Regents Physics Reference Table by showing the formula for work as equal to the force times the displacement (F*d), as well as the change in total energy (E): .

Another form of potential energy involves the stored energy an object possesses due to its position in a stressed elastic system. The most common problems involving elastic potential energy in Regents Physics involve the energy stored in a spring. Further, we can find the work done in compressing or stretching the spring by taking the area under a Force vs.

However, although the ball has lost mechanical energy, energy in the larger system has still been conserved.

Example 2: Work-energy theorem 2QuestionThe driver of a 1000 kg car travelling at a speed of 16,7 m·s?1 applies the car's brakes when he sees a red light.

Be careful not to be confused by which angle has been labelled \(\alpha\) and which \(\theta\). Problem 1:Fill in the table with the missing information using the positions of the 1 kg ball in the diagram below combined with the work-energy theorem. All textbook content made available on this site is released under the terms of a Creative Commons By-Attribution licence. Conservation If you gave me a dollar and asked for change, how many dimes would you want back?

Energy Transformations Energy is most noticeable as it transforms from one type to another.

After the Lesson: You will be able to identify and describe conversions from one type of energy to another.

Work To do work on an object you need an application of a force AND movement due to the force.

The work done on an object by an applied force is the product of the force and the distance through which the object is moved. Learning Goals for Section 1 The Nature of Energy Distinguish between kinetic and potential energy.

Energy comes in a tremendous variety of forms, which we can classify as kinetic (energy of motion) or potential (stored) to various degrees: solar energy, thermal energy, gravitational potential energy, nuclear energy, chemical potential energy, sound energy, electrical energy, elastic potential energy, light energy, and so on.

Gravitational potential energy, then, is the energy an object possesses because of its position in a gravitational field (height).

Let’s arbitrarily call its current potential energy zero, just to give us a reference point. Along the way, it just so happens that we derived the formula for the gravitational potential energy of an object. And energy can be converted among its many different forms, such as mechanical (which is kinetic, gravitational potential, and elastic potential), electromagnetic, nuclear, and thermal (or internal) energy. If the work done increases motion, there is an increase in the system’s kinetic energy. If an external force does positive work on the system, the system’s total energy increases. As we learned in the previous topic on work, the force needed to compress or stretch a spring from its equilibrium position increases linearly… the more you stretch or compress the spring, the more force it applies trying to restore itself to its equilibrium position. Since the direction of the applied force and the displacement are in opposite directions, \(\theta = 180°\). For example, a person pushing a trolley does work on the trolley, but the road does no work on the tyres of a car if they turn without slipping (the force is not applied over any distance because a different piece of tyre touches the road every instant). Would the speed of the ball be increased or decreased if air resistance were taken into account. Embedded videos, simulations and presentations are not necessarily, please check their license. HW: Bottom of Physical and Chemical Properties Review Ditto Chemistry Castle Learning due on Tuesday!

Energy is the ability to do work Like work, energy is measured in joules (J) What are some examples. 2 CHAPTER OUTLINE ? Work Work ? Power Power ? Energy and Its Forms Energy and Its Forms ? Kinetic Energy Kinetic Energy. Kinetic Energy The energy of motion The net work done on an object is equal to the change in kinetic energy.

Which of the following energy forms is associated with an object’s interaction with the environment? Other days, when you’ve had more energy, you may have woken up before the alarm clock, hustled to get ready for the day while a bunch of thoughts jump around in your head, and hurried on to begin your activities. In all cases, energy can be transformed from one type to another, and you can transfer energy from one object to another by doing work. If we do work to lift the box one meter off the floor, we need to overcome the force of gravity on the box (its weight) over a distance of one meter.

The change in the object’s potential energy, PE, is equal to the force of gravity on the box multiplied by its change in height, mgh.

The sun’s radiation provides an energy source for life on earth, which over the millenia has become the source of our fossil fuels.

When the spring is released, the elastic potential energy of the spring will do work on the object, moving the object and transferring the energy of the spring into kinetic energy of the object.

The sun’s radiation provides an energy source for live on earth, which over the millenia has become the source of our fossil fuels.

Therefore, the change in the car's kinetic energy is equal to the work done by the frictional force of the car's brakes. Energy and Work Whenever work is done, energy is transformed or transferred to another system. To a scientist work is done when changing motion To a scientist work is done when changing. Then, throughout the day, the more work you do, the more energy you lose… What’s the difference in these days?

If the work done compresses a spring, there is an increase in the system’s elastic potential energy. Put another way, you add energy to a system by doing work on it, and take energy from a system when the system does the work (much like you add value to your bank account by making a deposit, and take value from your account by writing a check). The sun’s radiation also provides the thermal and light energy that heat the atmosphere and cause the winds to blow.

Other examples of elastic potential energy include tennis rackets, rubber bands, bows (as in bows and arrows), trampolines, bouncy balls, and even pole-vaulting poles. When the brick hits the ground, all the brick's potential energy is converted to kinetic energy.

So… kinetic energy must be the ability or capacity of a moving object to move another object!

What happens to the kinetic energy and gravitational potential energy of a ball during free fall?

If both of these balls are traveling down a bowling lane at the SAME speed, which one would have more kinetic energy?

At which two points on the pendulum, is the pendulum experiencing the greatest potential energy?

Energy, Work & Power Unit 6 Learning Objectives You will learn the relationship between work and energy change kinetic energy = ?mv 2 gravitational potential. Kinetic Energy KE = ? mv 2 So stopping distances increase by four times when the speed is doubled because…….. The amount of potential energy of an object is equal to the amount of work done to get an object to that position.

Conservation of Energy The law of conservation of energy states that energy cannot be created or destroyed.

For a ball moving down a ramp, in the absence of friction, the gravitational potential energy at the top of the ramp would be equal to the kinetic energy at the bottom of the ramp. Work, Potential Energy, Kinetic Energy & Power F The force, F, pushes the box for a short distance. Work and Energy Definition of Work (W) ? ? Work is done when a force is exerted on an object AND the object moves in the direction of the force (or one. Work, Power, Energy Work Vocabulary Work (force x distance) Kinetic Energy ( ? mass x velocity 2 ) Potential Energy( mass x g x height) Review P = mv.

Chapter 5 – Work and Energy If an object is moved by a force and the force and displacement are in the same direction, then work equals the product of. Chapter 5 Work, Energy, Power Work The work done by force is defined as the product of that force times the parallel distance over which it acts.

Work, Power and Momentum PSC1341 Chapter 3 Work Work = Force times Distance Force is a vector quantity and only that part of the force that is parallel. Of course, there are many, many different kinds of energy which we haven’t mentioned specifically. The understanding that the work done on a system by an external force changes the energy of the system is known as the Work-Energy Theorem. This relationship is documented on the Regents Physics Reference Table by showing the formula for work as equal to the force times the displacement (F*d), as well as the change in total energy (E): .

Another form of potential energy involves the stored energy an object possesses due to its position in a stressed elastic system. The most common problems involving elastic potential energy in Regents Physics involve the energy stored in a spring. Further, we can find the work done in compressing or stretching the spring by taking the area under a Force vs.

However, although the ball has lost mechanical energy, energy in the larger system has still been conserved.

Example 2: Work-energy theorem 2QuestionThe driver of a 1000 kg car travelling at a speed of 16,7 m·s?1 applies the car's brakes when he sees a red light.

Be careful not to be confused by which angle has been labelled \(\alpha\) and which \(\theta\). Problem 1:Fill in the table with the missing information using the positions of the 1 kg ball in the diagram below combined with the work-energy theorem. All textbook content made available on this site is released under the terms of a Creative Commons By-Attribution licence. Conservation If you gave me a dollar and asked for change, how many dimes would you want back?

Energy Transformations Energy is most noticeable as it transforms from one type to another.

After the Lesson: You will be able to identify and describe conversions from one type of energy to another.

Work To do work on an object you need an application of a force AND movement due to the force.

The work done on an object by an applied force is the product of the force and the distance through which the object is moved. Learning Goals for Section 1 The Nature of Energy Distinguish between kinetic and potential energy.

Energy comes in a tremendous variety of forms, which we can classify as kinetic (energy of motion) or potential (stored) to various degrees: solar energy, thermal energy, gravitational potential energy, nuclear energy, chemical potential energy, sound energy, electrical energy, elastic potential energy, light energy, and so on.

Gravitational potential energy, then, is the energy an object possesses because of its position in a gravitational field (height).

Let’s arbitrarily call its current potential energy zero, just to give us a reference point. Along the way, it just so happens that we derived the formula for the gravitational potential energy of an object. And energy can be converted among its many different forms, such as mechanical (which is kinetic, gravitational potential, and elastic potential), electromagnetic, nuclear, and thermal (or internal) energy. If the work done increases motion, there is an increase in the system’s kinetic energy. If an external force does positive work on the system, the system’s total energy increases. As we learned in the previous topic on work, the force needed to compress or stretch a spring from its equilibrium position increases linearly… the more you stretch or compress the spring, the more force it applies trying to restore itself to its equilibrium position. Since the direction of the applied force and the displacement are in opposite directions, \(\theta = 180°\). For example, a person pushing a trolley does work on the trolley, but the road does no work on the tyres of a car if they turn without slipping (the force is not applied over any distance because a different piece of tyre touches the road every instant). Would the speed of the ball be increased or decreased if air resistance were taken into account. Embedded videos, simulations and presentations are not necessarily, please check their license. HW: Bottom of Physical and Chemical Properties Review Ditto Chemistry Castle Learning due on Tuesday!

Energy is the ability to do work Like work, energy is measured in joules (J) What are some examples. 2 CHAPTER OUTLINE ? Work Work ? Power Power ? Energy and Its Forms Energy and Its Forms ? Kinetic Energy Kinetic Energy. Kinetic Energy The energy of motion The net work done on an object is equal to the change in kinetic energy.

Which of the following energy forms is associated with an object’s interaction with the environment? Other days, when you’ve had more energy, you may have woken up before the alarm clock, hustled to get ready for the day while a bunch of thoughts jump around in your head, and hurried on to begin your activities. In all cases, energy can be transformed from one type to another, and you can transfer energy from one object to another by doing work. If we do work to lift the box one meter off the floor, we need to overcome the force of gravity on the box (its weight) over a distance of one meter.

The change in the object’s potential energy, PE, is equal to the force of gravity on the box multiplied by its change in height, mgh.

The sun’s radiation provides an energy source for life on earth, which over the millenia has become the source of our fossil fuels.

When the spring is released, the elastic potential energy of the spring will do work on the object, moving the object and transferring the energy of the spring into kinetic energy of the object.

The sun’s radiation provides an energy source for live on earth, which over the millenia has become the source of our fossil fuels.

Therefore, the change in the car's kinetic energy is equal to the work done by the frictional force of the car's brakes. Energy and Work Whenever work is done, energy is transformed or transferred to another system. To a scientist work is done when changing motion To a scientist work is done when changing. Then, throughout the day, the more work you do, the more energy you lose… What’s the difference in these days?

If the work done compresses a spring, there is an increase in the system’s elastic potential energy. Put another way, you add energy to a system by doing work on it, and take energy from a system when the system does the work (much like you add value to your bank account by making a deposit, and take value from your account by writing a check). The sun’s radiation also provides the thermal and light energy that heat the atmosphere and cause the winds to blow.

Other examples of elastic potential energy include tennis rackets, rubber bands, bows (as in bows and arrows), trampolines, bouncy balls, and even pole-vaulting poles. When the brick hits the ground, all the brick's potential energy is converted to kinetic energy.

So… kinetic energy must be the ability or capacity of a moving object to move another object!

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