Forms of Motion Flashcards
The 3 forms of motion are: translation, _______ and general motion
rotation
Translation involves ______ motion and occurs when a body moves so that all parts of it travel exactly the same distance, in the same ______ and in the same time
- linear
- direction
The three types of translation include rectilinear (straight-line), ___________ (____ line) and non-linear motion
- curvilinear
- curved
Rotation involves the movement of the body along a _______ path about a line in space so that all parts of the body travel through the same _____, in the same direction and in the same time
- circular
- angle
Rotation can be about both an _________ and an ________ axis
- internal
- external
____________ is a combo of both linear and angular motion (general in planar and space motion)
-General motion
A ______ is defined by a body or group of bodies whose motion is being examined
-system
Motion is explained relative to a _________ —- ———————, which helps to prevent ambiguity
-frame of reference
Measuring motion is needed for both ___________ and to measure performance
-standardisation
________________ describes motion, which kinetics explains _____ a body moves the way it does and the _____ of the movement
- kinematics
- why
- cause
Quantities of measurement are both _________, which describes only the magnitude of a motion and _________ which has magnitude and direction
- scalar
- vector
describing linear motion of the body (just translation, not the mass or forces acting on it) is called _________
-linear kinematics
The actual change in position of something is the _________ __________
-linear distance
Linear ________ is the change in position , and separation of 2 points based on both the distance and the direction travelled
-displacement
the rate of covering a distance is _________ ________
-linear speed
linear ____ is measured by dividing distance by ______. It is measured in m.s-1
- speed
- time
When running, one’s speed is calculated by ___________ the stride length by the ______ ______
- multiplying
- stride rate
At ____ velocities, there is a larger increase in Stride Length
-low
At high velocities, there is minimal change in ______ ______ but a curvilinear increase in _________ ______
- stride length
- stride rate
Linear ______ is the rate at which a body moves from one location to another
-velocity
velocity is calculated by dividing ______ by ______ in m.s-1 (with direction)
- displacement
- time
Linear acceleration (a) is the _____ at which velocity changes with respect to _____
- rate
- time
(a) is calculated by dividing the difference between the _____ and _____ velocity by the elapsed time. In m.s-2 with direction and sign
- final
- initial
u = initial \_\_\_\_\_\_ (m.s-1) \_\_= final velocity (m.s-1) t = time (s) a= \_\_\_\_\_\_\_\_\_\_\_ (m.s-2) _= displacement (m)
- velocity
- v
- acceleration
- s
Equations of linear motion include: v= u + at _= ut + 0.5(at^2) s= 0.5(_ _ +vt) v^2=u^2 + _as
-s
-ut
2
Describing angular motion of bodies like rotation around an axis is called _________ ___________
- angular
- kinematics
Angular _________ is the angle between the initial and final positions of a _________ body that has over from one position to another. It is measured by following the ____ taken by the body
- distance
- rotating
- path
the actual change in position from a rotating body’s start and finish is called the _______ _________. It is equal to the smaller of the two angles between a body’s initial and final positions
-angular displacement
Angular _____ is the rate of covering ________. It is equal to the angular distance divided by ______. Can be measured in degrees or radians
- speed
- distance
- time
The rate at which a body moves from one location to another at an angle is called the _________ __________. Is is measured by dividing the angular _______ by time. It is measured in degrees or radians with direction
- angular velocity (greek symbol, 8 on side)
- displacement
Angular __________ (alpha symbol) is the rate of change in angular velocity. It is measured in degrees or radians with direction and sign
-acceleration
__________ kinematics are measured in revolutions, _______ or radians
- Angular
- degrees
Angular motion _______ are represented by an arrow drawn based on the right hand thumb rule
-vectors
Linear and angular motion are related (think spinning something around and then letting go=both types). Linear velocity at implement end = _______ _______ _ ______ multiplied by the radium of rotation
-angular velocity of implement (e.g.: hitting a golf ball with a club)
