| A | B |
|---|
| WORK | A force acts on an object, and the object moves in the direction that is parallel to the force (same direction) |
| WORK EQUATION | W = Fd (W=mad) |
| ZERO WORK | Force (F) and distance (d) are perpendicular to each other (ex. hold book up and walk with it) |
| NO WORK IS DONE | If the object does not move, then... |
| JOULE (J) | The unit for Work is the... |
| twice the work (directly proportional) | What happens if twice the work is exerted over the same distance? |
| twice the work (directly proportional) | What happens if the object moves twice the distance? |
| power | Amount of work done divided by the time interval during which the work is done |
| watt (w) | unit for power |
| power formula | P = W/t |
| power | Rate at which work is done |
| work | transfer of FORCE from one object to another over some DISTANCE |
| work | Consider the scenario below. When is the weight-lifter doing WORK? Lifting dumbbell from ground-level to waist-level |
| NOT Work (Weight-lifter only controls RATE of GRAVITY) | Consider the scenario below. When is the weight-lifter doing WORK? Lower dumbbell to waist-level |
| W = F x D = 500N x 4m = 2000.00J | How much Work is needed to lift an object that weighs 500N to a height of 4m? |
| W = F x D = 1000N x 8m = 8000.00J | How much Work is needed to lift 1000N to a height of 8m? |
| NO because the wall did not move any Distance. | A man pushes on a wall with ALL HIS MIGHT. The wall doesn't move. Is there work done on the wall? |
| unit for power | Joules/Second = Watts (W) |
| W = F x d = 70.00 J | If you exert a force of 35 N to lift a box a distance of 2 m, how much work is done? |
| P = W / t = 8.00 w | A stage manager at a play raises the curtain by doing 200 J of work on the curtain in 25s. What is the power output of the stage manager? |
| LAW OF CONSERVATION OF ENERGY | ENERGY CANNOT BE CREATED OR DESTROYED |
| LAW OF CONSERVATION OF ENERGY | UNIVERSALLY ACCEPTED PRINCIPLE THAT TOTAL ENERGY REMAINS CONSTANT |
| MECHANICAL | SUM OF POTENTIAL AND KINETIC ENERGY IN A SYSTEM |
| JOULE (J) | SCIENTIFIC UNIT FOR ENERGY |
| THERMAL ENERGY | HEAT |
| FISSON | SPLITTING OF ATOMIC NUCLEI |
| FUSION | MERGING OF ATOMIC NUCLEI |
| POTENTIAL ENERGY | ENERGY OF POSITION |
| KINETIC ENERGY | ENERGY OF MOTION |
| POTENTIAL ENERGY | STORED ENERGY |
| KINETIC ENERGY | 1/2mv^2 |
| potential energy | mgh |
| mechanical energy | power that an object gets from its position and motion. |
| thermal energy | energy that is generated and measured by heat. |
| chemcial energy | energy stored in bonds of chemical compounds |
| gravitational potential energy | energy an object possesses because of its position in a gravitational field. |
| elastic potential energy | occurs when objects are impermanently compressed, stretched or generally deformed in any manner |
| kinetic energy | depends on mass and motion |
| Joule (J) | scientific unit for work |
| Watt (W) | scientific unit for power |
| power | work divided by time |
| work | force times distance |
| power | rate work happens |
| work | Pushing a car horizontally from rest |
| watt | Joule/second |
| LAW OF CONSERVATION OF ENERGY | ENERGY CANNOT BE CREATED OR DESTROYED |
| LAW OF CONSERVATION OF ENERGY | UNIVERSALLY ACCEPTED PRINCIPLE THAT TOTAL ENERGY REMAINS CONSTANT |
| MECHANICAL | SUM OF POTENTIAL AND KINETIC ENERGY IN A SYSTEM |
| JOULE (J) | SCIENTIFIC UNIT FOR ENERGY |
| THERMAL ENERGY | HEAT |
| FISSON | SPLITTING OF ATOMIC NUCLEI |
| FUSION | MERGING OF ATOMIC NUCLEI |
| POTENTIAL ENERGY | ENERGY OF POSITION |
| KINETIC ENERGY | ENERGY OF MOTION |
| POTENTIAL ENERGY | STORED ENERGY |
| KINETIC ENERGY | 1/2mv^2 |
| potential energy | mgh |
| mechanical energy | power that an object gets from its position and motion. |
| thermal energy | energy that is generated and measured by heat. |
| chemcial energy | energy stored in bonds of chemical compounds |
| gravitational potential energy | energy an object possesses because of its position in a gravitational field. |
| elastic potential energy | occurs when objects are impermanently compressed, stretched or generally deformed in any manner |
| kinetic energy | depends on mass and motion |
| Joule (J) | scientific unit for work |
| LAW OF CONSERVATION OF ENERGY | ENERGY CANNOT BE CREATED OR DESTROYED |
| LAW OF CONSERVATION OF ENERGY | UNIVERSALLY ACCEPTED PRINCIPLE THAT TOTAL ENERGY REMAINS CONSTANT |
| MECHANICAL | SUM OF POTENTIAL AND KINETIC ENERGY IN A SYSTEM |
| JOULE (J) | SCIENTIFIC UNIT FOR ENERGY |
| THERMAL ENERGY | HEAT |
| FISSON | SPLITTING OF ATOMIC NUCLEI |
| FUSION | MERGING OF ATOMIC NUCLEI |
| POTENTIAL ENERGY | ENERGY OF POSITION |
| KINETIC ENERGY | ENERGY OF MOTION |
| POTENTIAL ENERGY | STORED ENERGY |
| KINETIC ENERGY | 1/2mv^2 |
| potential energy | mgh |
| mechanical energy | power that an object gets from its position and motion. |
| thermal energy | energy that is generated and measured by heat. |
| chemcial energy | energy stored in bonds of chemical compounds |
| gravitational potential energy | energy an object possesses because of its position in a gravitational field. |
| elastic potential energy | occurs when objects are impermanently compressed, stretched or generally deformed in any manner |
| kinetic energy | depends on mass and motion |
| energy | ______ is the ability to change things. It can change the temperature, shape,speed, position, or direction of an object. |
| transformation | A change of energy from one form to another is called energy ______________. During energy transformation, total amount of energy stays the same-no energy is lost or gained. |
| electrical --> light | Potential energy in flashlight batteries is transformed into __________ energy and then _____ |
| mass & velocity | Not all moving objects have the same amount of kinetic energy. The amount of kinetic energy an object depends on the ____ and _____ of the object. |
| warmer --> cooler | Thermal energy moves from ______ objects to ______ objects. |
| radient energy | Light energy that travels through electromagnetic waves and can move through empty space |
| mechanical energy | Energy of moving objects that is used to do work |
| conduction | Form of heat transfer where heat energy is directly transferred between molecules through molecular collisions or direct contact. |
| convection | Process by which, in a fluid being heated, the warmer part of the mass will rise and the cooler portions will sink. |
| radient | Energy that is radiated or transmitted in the form of rays or waves or particles. |
| energy flow direction | The hot energy (temp) always flows to cooler (temp) energies |
| LAW OF CONSERVATION OF ENERGY | ENERGY CANNOT BE CREATED OR DESTROYED |
| LAW OF CONSERVATION OF ENERGY | UNIVERSALLY ACCEPTED PRINCIPLE THAT TOTAL ENERGY REMAINS CONSTANT |
| MECHANICAL | SUM OF POTENTIAL AND KINETIC ENERGY IN A SYSTEM |
| JOULE (J) | SCIENTIFIC UNIT FOR ENERGY |
| THERMAL ENERGY | HEAT |
| FISSON | SPLITTING OF ATOMIC NUCLEI |
| FUSION | MERGING OF ATOMIC NUCLEI |
| POTENTIAL ENERGY | ENERGY OF POSITION |
| KINETIC ENERGY | ENERGY OF MOTION |
| POTENTIAL ENERGY | STORED ENERGY |
| KINETIC ENERGY | 1/2mv^2 |
| potential energy | mgh |
| mechanical energy | power that an object gets from its position and motion. |
| thermal energy | energy that is generated and measured by heat. |
| chemcial energy | energy stored in bonds of chemical compounds |
| gravitational potential energy | energy an object possesses because of its position in a gravitational field. |
| elastic potential energy | occurs when objects are impermanently compressed, stretched or generally deformed in any manner |
| kinetic energy | depends on mass and motion |
