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### 51 Cards in this Set

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 What is the difference between distance and displacement Distance: how far you travelDisplacement: how far you are from the start Difference between speed and velocity? Speed: scalar distance/timeVelocity: gives direction displacement/time How do you determine the average velocity an object from position data? All positions/ all times How do you determine the instantaneous velocity of an object from position data? Specific point/ specific time How do you determine the average acceleration of an object from velocity data? Velocity/timeVf-vi/time Give two examples of the velocity of an object when it's acceleration is zero -not moving-moving at a constant speed in a straight line Describe the acceleration of an object moving in a circular path at a constant speed Acceleration is towards center Describe and name newtons 1st law Anything in motion will stay in motion unless acted upon by an outside force Give two examples of an objects motion the forces acting on the object are balanced -motionless-moving at constant speed Name the most prominent non-contact force discussed in class Gravity Describe and name all of the forces acting on a falling raindrop Gravity and friction Draw and name all the forces acting on a braking automobile Gravity down.Normal up.Friction pushing back. Describe and name newtons second law F=ma What is the relationship between the net force on an object and the objects acceleration? Bigger net force= bigger acceleration Describe the effect an objects mass to its acceleration when an unbalanced force is applied Mass and acceleration are inversely proportional Describe and name newtons third law Every action has an equal opposite reaction What are the two forces acting between earth and the moon? Earth pulls moonMoon pulls earth If a physics textbook is pushing down on the table with a force of 15N what is the magnitude and direction of the table pushing on the book? 15N up15N down Name two real world applications of newtons 3rd law -car on road road on car-chair on floor floor on chair How does the mass of different objects affect their gravitational force? Give an example Bigger mass=bigger forceEx. Sun What is the difference between mass and weight? Give an example. Mass: how much stuff you have.Weight: how much gravity pulls on the mass How does the distance between two objects affect the gravitational force? Give an example. Closer they have greater forces. Example sun is far away so force in smaller Give one example of the importance of gravitational forces in the space program Use it to slingshot Rockets Name the types of charges and their effect on the electric force Positive NegativeNeutralOpposites attractSame repel Describe how the amount of charge affects the electrical force. Give an example Bigger charge equals more force How is inference uses explain forces in nature such as gravitational force? Use examples to help explain We can see and predict but don't know actual cause of it. Example gravit Describe the relationship between charged particles and the strength of electric force. Give me an example Closer = more forceFarther = less force Give examples of that every day application of electric forces found in both nature and technology LightsBodyFloorCar Name and describe the five different types of potential energy Gravitational:height and fallingNuclear :stored in nucleusChemical:Carbon bondsElastic: stretched or compressedElectrostatic: extra or lack of electrons Describe a closed system in terms of its total energy Energy is conserved Describe two examples of transformation. Between kinetic and potential energy in a system each Example must use a different type of potential energy Apple: chemical into kineticSkydiving: gravitational into kinetic Describe the loss of useful energy and energy transformations It is turned into heat energy which we cannot use Describe transfer of heat by conduction. Give an example￼ Touching.-pan on stove Describe transfer of heat by convection. Give an example￼ Molecules move with its heat-boiling water Describe transfer of heat by radiation given example Waves -microwave Describe how the transformation of mechanical energy into electrical energy and the transmission of electrical energy is the same in each power plant The only difference is way of turning turbine Descibe a specific power plant and it's process to transform types of energy into electrical wnergy Burning natural gas Define frequency and period Frequency: cycles/timePeriod: time/cycles Define and give an example of reflection Waves change direction at same angle-looking in a lake Define and give an example of diffraction Waves go through an opening-wave in ocean Define and give an example of refraction Changing medium-going through water Examples of waves commonly observed in nature or used in technological application Radios wavesOcean waves Identify and describe the relationship between speed wavelength and frequency of a wave V=wl*fThey change each other Explain the observed change in frequency of a mechanical waves coming from a moving object as it approaches and moves away Doppler affect: come towards you-scrunched waves high frequencyAway from you- lower frequency Explain the transfer of energy through medium mechanical waves￼ It is based off of amplitude Describe the relationship of energy to wavelength or frequency for electromagnetic radiation Energy is based off of frequency Name and describe the parts of electromagnetic spectrum￼ Radio waves: long wavelength low frequencyGamma ray: short wavelength high frequency What is the speed in which all electromagnetic waves travel The speed of light3x10^8 Explain the observed change in frequency of an electromagnetic wave coming from moving object as it approaches and moves away Increased frequency as it moves towards you. (Blue)Decreased frequency as it moves away. (Red) Give two examples of the use of electromagnetic radiation in every day life TVCell phones Name the three contact forces discussed in class NormalTensionFriction