Terms : Hide Images
| 9542859740 | Vector | Quantity that involves both magnitude and direction | 0 | |
| 9542859741 | Scalar | A quantity that does not involve a direction | 1 | |
| 9542859742 | Kinematics | Mathematical tools for describing motion in terms of displacement, velocity, and acceleration | 2 | |
| 9542859743 | Position | Location, "x" in equations units: meters | 3 | |
| 9542859744 | Displacement | CHANGE in position (△x) units: meters | 4 | |
| 9542859745 | Average speed formula | Total distance/ time d/t units: m/s | 5 | |
| 9542859746 | Average velocity | Displacement / time △x/△t units: m/s | 6 | |
| 9542859747 | Velocity | Speed with a direction units: m/s | 7 | |
| 9542859748 | Acceleration | CHANGE in velocity per second △v/△t units: m/s/s | 8 | |
| 9542859749 | Slope of position-versus-time graph | Velocity | 9 | |
| 9542859750 | Slope of velocity-versus-time graph | Acceleration | 10 | |
| 9542859751 | Area between the slope and the axis on a velocity-versus-time graph | Object's displacement | 11 | |
| 9542859752 | Gravity (g) | An ACCELERATION on Earth: -9.8 m/s^2 | 12 | |
| 9542859753 | Newton's First Law | an object at rest will stay at rest and an object in motion will stay in constant velocity unless a net force acts on it (Law of Inertia) | 13 | |
| 9542859791 | Newton's Second Law | Acceleration is directly proportional to NET force and inversely related to mass. a= F/m | 14 | |
| 9542859754 | Newton's Third Law | For every force there is an EQUAL but opposite reaction force between the two objects. | 15 | |
| 9542859755 | Force | A push or a pull unit: Newtons | 16 | |
| 9542859756 | Inertia | the property of objects to naturally resist changes in their states of motion | 17 | |
| 9542859757 | Weight | FORCE exerted on an object by the Earth or whatever planet F = ma = mg unit: Newtons | 18 | |
| 9542859758 | Normal Force | component of force that's perpendicular to the surface Unit: Newtons | 19 | |
| 9542859792 | Free-body (or force) diagram | Vector length represents magnitude of the FORCE applied. Direction matters. |  | 20 |
| 9542859759 | Friction | the component of the contact FORCE that's parallel to the surface F = mu (normal force) unit: Newtons | 21 | |
| 9542859760 | Static Friction | occurs when there is no motion between two objects (friction that holds an object still) unit: Newtons | 22 | |
| 9542859762 | Kinetic Friction | occurs when there is relative motion (when there's sliding) Equal to push force when there is motion but not acceleration. unit: Newtons | 23 | |
| 9542859765 | Work | Scalar (no direction) If a force F acts over a distance (△x) and F is parallel to (△x), then the work done by F is the product of force and distance Causes the amount of energy or type of energy to change. W=Fd = △E (Work-Energy Theorem) unit: Joules | 24 | |
| 9542859766 | Work at an angle | Only the component of force in the SAME direction as motion does any work. A force applied perpendicular to direction of motion does ZERO work unit: Joules |  | 25 |
| 9542859767 | Kinetic Energy | the energy of an object due to motion K= (1/2)mv^2 unit: Joules | 26 | |
| 9542859768 | Work Energy Theorem | Work equals the change in kinetic energy of an object |  | 27 |
| 9542859769 | Potential Energy | the energy an object or system has by virtue of its position Ug:gravitational potential energy Ug= (mg)△y = weight force x distance = Work done by Earth unit: Joules | 28 | |
| 9542859770 | Elastic potential energy | Us= (1/2) kx^2 unit: Joules | 29 | |
| 9542859771 | Total mechanical energy | The sum of an object's kinetic and potential energies, denoted by E E= K+U unit: Joules | 30 | |
| 9542859772 | Law of Conservation of Energy | Ki + Ui = Kf +Uf (initial mechanical energy = final mechanical energy) No outside force = no △Total E | 31 | |
| 9542859773 | Power | The rate at which one does work given by P= W/t or P=△E/t or P=IV The rate at which energy is converted. Greater power = faster a battery runs out. unit: Watts | 32 | |
| 9542859774 | Momentum | Vector quantity given by p = mv. A measure of the difficulty to change an object's motion unit: kg m/s | 33 | |
| 9542859775 | Impulse-Momentum Theorem | Impulse cause a change in momentum △p = Ft = △(mv) |  | 34 |
| 9542859776 | Law of Conservation of Momentum | The total linear momentum of an isolated system remains constant unless acted on by an OUTSIDE force. total p initial = total p final Causes the velocity of the center of mass of the system to remain constant. | 35 | |
| 9542859777 | Uniform circular motion | Velocity is not constant because the direction of velocity is always changing (even if the speed is constant) In order to cause this △v, there must be a net force, and therefore acceleration, towards the center. | 36 | |
| 9542859778 | Centripetal acceleration | centripetal= towards the center ** if a question has circular motion and asks about speed, set up with N2L and use this acceleration ** unit: m/s^2 |  | 37 |
| 9542859779 | Centripetal force | ** this is N2L with centripetal accel substituted in ** Can be tension force, gravitational force, friction, etc. unit: Newtons |  | 38 |
| 9542859780 | Newton's Law of Universal Gravitation | Any two objects in the universe exert an attractive force on each other | 39 | |
| 9542859781 | Gravitational force | r is the distance between the CENTERS of the two objects |  | 40 |
| 9542859782 | Torque | A property of force that makes an object rotate. Force must be applied a distance from the axis. If balanced, a=0, and Clockwise rF = CC rF unit: N m |  | 41 |
| 9542859783 | Equilibrium | Sum of all forces acting on an object is 0: F net=0 No acceleration according to N2L because net force=0. | 42 | |
| 9542859784 | Rotational equilibrium | Sum of all torques on an object is 0: T net = 0 | 43 | |
| 9542859785 | Static equilibrium | An object is at rest | 44 | |
| 9542859786 | Rotational inertia | Also known as the moment of inertia The tendency of an object in motion to rotate until acted upon by an outside force | 45 | |
| 9542859787 | Simple Harmonic Motion | When restoring force is proportional to an object's displacement but in the opposite direction causing oscillation back and forth. (Hooke's Law: F = kx) | 46 | |
| 9542859788 | Period | Time to complete one oscillation and come back to where it began. Inverse of frequency. unit: seconds | 47 | |
| 9542859789 | Wave interference | When wave pulses run into each other and amplitudes combine to temporarily become larger or smaller. | 48 | |
| 9542859790 | Angular momentum | Always conserved assuming no outside forces. L = Iw and I=__mr^2 so if radius decreases, velocity increases in order to conserve momentum. |  | 49 |
| 9543031719 | Mass | A measure of an object's inertia (resistance to acceleration). unit: kilograms | 50 | |
| 9543929759 | Voltage | The push that causes current to flow. Also called potential difference. unit: volts V=IR | 51 | |
| 9543935131 | Current | The rate of flow of charge. I = △q/t = △V/R unit: Amperes | 52 | |
| 9543953147 | Resistance | Slows the current in a circuit. R = V/I unit: Ohms | 53 | |
| 9544607548 | Ohm's Law | Current is directly proportional to voltage but inversely related to resistance. |  | 54 |
| 9544616854 | Coulomb's Law | Electric force between charged objects is directly related to the magnitude of the charges and inversely related to the square of the distance between them. |  | 55 |
| 9544670845 | Charge | Electric charge is conserved in any isolated system. Unit: Coulombs variable in equation: q | 56 | |
| 9544674867 | Kirchhoff's Loop Rule | The net change in potential (voltage) around a closed loop is zero. Really a restatement of the Law of Conservation of Energy. | 57 | |
| 9544678911 | Kirchhoff's Junction Rule | The sum of currents entering a junction equals the sum of the currents leaving it. Really a restatement of Conservation of Charge. | 58 | |
| 9545080576 | Frequency | Oscillations per second. Inverse of Period. unit: Hertz | 59 | |
| 9974598710 | Resistivity | A measure of the resisting power of a specified MATERIAL to the flow of an electric current. Every material has its own resistivity constant. | 60 | |
| 9974705233 | Magnitude | The quantity of a variable. Ex: how many newtons of force are present or how many coulombs of charge. | 61 | |
| 13584713811 | Field Strength | The magnitude of acceleration caused at that distance. Measured in m/s/s just like acceleration! | 62 | |
| 13584894203 | (F vs t) and (a vs t) graphs.... | Always have the same shape due to N2L. | 63 | |
| 13834435102 | Hooke's Law | F=kx. The force in a SPRING is directly proportional to its spring constant and to the distance of stretch. | 64 |
