1. Vocabulary Words

2. Acceleration

3.  The rate at which velocity is changing in magnitude, direction or both

4. Average Speed

5.  Path distance divided by time interval

6. Elapsed Time

7.  Time that passed since the beginning of an event

8. Free Fall

9.  Motion under the influence of the gravitational force

10. Instantaneous Speed

11.  Speed at any instant of time

12. Rate

13.  How much something changes per unit of time

14. Relative

15.  Regarded in relation to something else

16. Speed

17.  How fast something is moving, distance moved over time

18. Velocity

19.  Speed together with the direction of motion

22. OOne of the vectors, often mutually perpendicular, whose sum is a resultant vector.

23. Projectile

24. AAn object that moves through the air or space acted on only by gravity.

25. Resolution

26. TThe process of determining the components of a vector.

27. Resultant

28. TThe vector sum of two or more component vectors.

29. Satellite

30. AAn object that falls around Earth or some other body rather than into it.

31. Scalar Quantity

32. AA scaled amount only.

33. Vector

34. AAn arrow whose length represents the magnitude of a quantity and whose direction represents the direction of the quantity.

35. Vector Quantity

36. IIncludes a magnitude and direction.

39. In general, a state of balance

64. Newton’s second law of motion- force and acceleration

65. Air resistance  Friction, or drag, that acts on something moving through the air.

66. Fluid  Anything that flows, in particular, any liquid or gas.

67. Free-body diagram  A diagram showing all the forces acting on an object.

68. Inversely  When two values change in opposite directions, so that if one is doubled the other is reduced to one half, they are said to be inversely proportional to each other.

69. Newton’s second law  The acceleration produced by a net force on a body is directly proportional to the magnitude of the net force, is in the same direction as the net force, and is inversely proportional to the mass of the body.

70. Pascal  The SI unit of pressure. One Pascal of pressure exerts a normal force of one Newton per square meter.

71. Pressure  Force per surface area where the force is normal to the surface; measured in Pascals.

72. Terminal Velocity  Terminal speed together with the direction (down for falling objects).

73. Terminal speed  The speed at which the acceleration of a falling object is zero because friction balances the weight.

74. Key Terms

75. OOne of the pair of forces described in Newton’s Third Law

76.  Action Force

77. AA mutual action between objects where each object exerts an equal but opposite force on the other

78.  Interaction

79. WWhenever one body exerts a force on another body the second body exerts an equal and opposite force on the first

80.  Newton’s Third Law

81. TThe force that is equal in strength and opposite in direction to the action force, which acts simultaneously on whatever is exerting the action force

82.  Reaction Force

83. Chapter 7 Vocabulary

84. Electric charge that remains unchanged during interactions

85. Colliding objects rebound without lasting deformation or heat generation

86. Product of force and time interval during which force acts

87. Colliding objects become distorted and\or generate heat during the collision

88. Absence of a net external force, the momentum of an object or system of objects is unchanged

89. Product of mass and the velocity of an object -Has Magnitude and direction

90. Chapter 8 Vocabulary

91. Useful work output divided by the total work input

92. Enables an object to do something

93. Pivot point

94. SI unit of work

95. Energy of motion equal to half the mass, multiplied by the speed squared

96. Energy can’t be created or destroyed

97. Machine made of bar that turns about a fixed point

98. Device used to multiple forces or simply to change direction of forces

99. Ratio of output force to the input

100. Energy due to position or movement of something

101. Stored and held in readiness

102. Rate at which work is done or energy is transformed, equal to the work done or energy transformed divided by time -Measured in Watts

103. Kind of lever used to change direction of a force

104. SI unit of power

105. The product of a force of an object and the distance through which the object is moved

106. States that whenever work is done, energy changes

107. Shawna Foyle, Brittany Pyeritz, Mark Shandrick

108. AXiS

109.  The straight line around which an object may rotate or revolve.  A horizontal or vertical reference line in a graph

110. CENTRiFUGAL FORCE

111. The outward force on a rotating or revolving body - Fictitious (made up)

112. CENTRiPETAL FORCE

113. The center directed force that causes an object to move in a curved path

114. Linear Speed

115. The path of distance moved per unit of time - Aka speed

116. Revolution

117. Motion of an object turning around an axis outside the object

118. Rotation

119. The spinning motion that takes place when an object rotates about an axis - Located within the object

120. Rotational Speed

121. The number of rotations or revolutions per unit of time - Measured in revolutions per minute - RPM

122. Tangential Speed

123. The speed of an object moving around a circular path

124. CHAPTER 10

125. Center of Gravity

126. Point at the center of an objects weight distribution where the force of gravity can be considered to act

127. Center of Mass

128. Point at the center of an objects mass distribution where all its mass can be considered to be concentrated

129. Neutral Equilibrium

130. The state of an object balanced so any small movement neither raises nor lowers its center of gravity

131. Stable Equilibrium

132. The state of an object balanced so that any small displacement or rotation raises the center of gravity

133. Unstable Equilibrium

134. The state of an object balance so any small displacement or rotation lowers center of gravity

135. By Steve Schott Nick Pesanka & Jake Pulsifer

136. Ch. 11 Angular momentum

137. Ch. 11 The production of rotational inertia and rotational velocity.

138. Ch. 11 LAW OF CONSERVATION OF ANGULAR MOMENTUM

139. If no unbalanced external torque acts on a rotating system the angular momentum of that system is constant.

140. LEVER ARM

141. Ch. 11 The perpendicular distance between an axis and the line of action of a force that tends to produce rotation about the axis.

142. Ch. 11 Linear momentum

143. Ch. 11 Product of the mass and the velocity of an object, a.k.a. momentum

144. Ch. 11 Rotational inertia

145. Ch.11 The reluctance of an object to change its state of rotation, determined by the distribution of the mass of the object in the location of the axis of rotation or revolution.

146. Ch. 11 Rotational Velocity

147. Ch. 11 Rotational speed together with a direction for the axis of rotation or revolution.

148. Ch. 11 The rotational analog of force is _______. Hint: Tends to produce rotational acceleration.

149. Ch. 11 Torque DUH.

150. Moving to Ch. 12 Inverse Square law

151. Ch. 12 The weakening of gravity with distance.

152. Ch. 12 Which law states that: Every object attracts every other object with a force that for any two objects is directly proportional to the mass of each object.

153. Ch. 12 Law of universal gravitation

154. Ch. 12 Perturbatio n

155. Ch.12 The deviation of an orbiting object from its path around a center of force caused by the action of an additional center of force.

156. Ch. 12 Universal Gravitational Constant

157. Ch.12 A constant G in the equation for Newton’s law of universal gravitation; measures the strength of gravity.

158. Holl Ball Madeja & Kelsey Lloyd

159. Electrical Forces.  A force that one charge exerts on another.

160. Electrostatics.  Electricity at rest.

161. Charge.  The attracting and repelling behavior.

162. Conservation of Charge.  Charge is not created or destroyed but can be transferred.

163. Coulomb’s Law.  F = k q1 – q2 / d^2

164. Coulomb.  SI unit for charge.

165. Conductors.  Good for the motion of electrical charges.

166. Insulators.  Poor conductors of electricity.

167. Semiconductors.  Behaves sometimes as insulators& sometimes as conductors.

168. Superconductors.  At temps near absolute zero these materials require infinite conductivity.

169. Induced.  Electrical charge that distributes on another object because of a nearby charge.

170. Induction.  The charging of an object without direct conduct.

171. Grounding. AAllowing charges to move freely along a connection between a conductor and the ground.

172. Electrically Polarized.  Charges are aligned so that one side is slightly more positive than negative.

173. Electric field.  A force field around every electrical charge or any group of charges.

174. Electrical Potential Energy.  Energy a charge has due to it’s location in an electric field.

175. Electric Potential.  Electric potential energy per coulomb at a location in an electric field.

176. Volt. SSI unit for electric potential.

177. Voltage.  Electric potential.

178. Capacitor. AA device where electrical energy can be stored.

179. Ac current that repeatedly changes direction

180. SI unit for electrical current

181. An electircal device that restricts the current to flow in one direction

182. Dc current that moves in only one direction

183. The flow of electric charge, measured in amps

184. The rate at which electrical energy in converted into another form of energy

185. Resistance of a material to the flow of an electric current

186. SI unit for electrical current

187. The Statement that the current in a circuit is directly proportional to the voltage impressed across the circuit, and is inversely proportional to the resistance of the circiuit

188. The difference in electrical potential

189. Any Path along which electrons can flow

190. Forms branches that electrical current can travel along to get to the devices

191. Single path for the flow of electricity

192. Devices that are connected to the same two spots so that the current can flow through each device individually

193. A diagram of a circuit that uses symbols to show devices

194. A circuit that in which the flow of electricity must flow through each device in turn