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KIN 330
Exam 4
| Question | Answer |
|---|---|
| _________ is the description of the spatial and temporal components of motion | Kinematics |
| _____________ is the description of motion without regard for forces | Kinematics |
| What are the variables of kinematics? | Position, displacement, velocity, and acceleration |
| ____________ _____________ is rotation about a point | Angular Motion |
| In terms of angular motion _________ to the axis of rotation means less displacement | Closer |
| In angular motion not all points are displaced _____________ | Equally |
| 1 radian= _____ degrees | 57.3 degrees |
| A ______________ is the ratio of the arc length (r) of a circle to the radius length | Radian |
| __________ ____________ is the total of all angular changes during its path of motion. AKA total path traveled | Angular Distance |
| Angular displacement= __________-___________ | Final position - Initial position |
| In terms of direction of rotation counter-clockwise= __________ (Positive or negative) | Positive |
| In terms of direction of rotation clockwise= ______________ (positive or negative) | Negative |
| ___________ _____________ is the angular distance traveled per unit of time | Angular speed |
| In terms of linear and angular displacement larger radius= _____________ distance | Larger |
| Linear velocity of rotating object is _______________ (______________) to path of motion | tangential (perpendicular) |
| To make a hockey puck go faster you need to increase ____________ __________ or __________ | Angular velocity or radius |
| ______________ distance over the same time you will increase the velocity | Increase |
| _________________ acceleration represents the change in linear velocity for a body traveling on a curved path | Tangental Acceleration |
| Tangental Acceleration is directed _________________ to a curved path (radius) | Perpendicular |
| __________/__________________ acceleration is directed toward the center along the curved path | Radial/ Centripetal |
| During radial/centripetal acceleration ___________ speed of an object traveling a curved path may remain constant but the ____________ of object traveling a curved path is constantly changing | Linear; direction |
| During radial acceleration a change in direction results in a change in _____________ | Velocity |
| The _________ of ____________ serves as an index of total body motion | Center of Mass |
| What does the location of the center of mass determine? | The way the body responds to external forces (Magnitude of torque) |
| _____________ ________ is the property of an object that resists changes in its angular motion | Angular Inertial |
| The ___________ of ___________ is the point where gravitational force is applied | Center of Mass |
| The ____________ of ______________ is the distance mass is distributed from a specific axis of rotation | Radius of Gyration |
| When mass is distributed close to the axis the radius of gyration the Angular Inertial ____________ (Increases or decreases) | Decreases |
| Angular Momentum is the product of ___________ x ___________ | Mass x velocity |
| __________ _____________ quantifies the angular motion of an object | Angular Momentum |
| Angular acceleration is __________ directly proportional to the magnitude of external torque | Directly |
| Angular acceleration is ______________ proportional to the moment of intertia with respect to axis of rotation | Inversely |
| To cause some angular acceleration we need to ____________ the moment of inertial to then _____________ the torque | Increase; increase |
| Units for angular displacement are... | Degrees or Radians |
| Angular ___________ is the rate of change of angular displacement per unit of time | Velocity |
| Linear displacement (d)= _________ ___________ x _______ | Angular displacement x r (radius of our circle) |
| Increase the radius of rotation ___________ linear displacement | Increases |
| Linear velocity (Vt)= ________ _________ x _______ | Angular velocity x r |
| Increasing the r will ______ linear displacement | increase |
| Increase linear displacement over the same t you will ____________ linear velocity | Increase |
| To Increase linear velocity and keep angular velocity the same you must __________ r | Increase |
| ___________ is the property of an object that resists changes in motion | Inertia |
| Linear inertia is quantified by an objects ________ | Mass |
| _________ ______________ is the product of mass and velocity | Linear Momentum |
| ___________ _______________ is the angular analog of linear momentum | Angular momentum |
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sschichtel