Linear motion Flashcards
Define ‘linear motion’
Th movement of a body in a straight to curved line where all parts move in the same direction and distance at the same time e.g. downhill ski jumper
How is linear motion created?
A direct force is applied to a body through its centre of mass
Define ‘centre of mass’
The point at which a body is balanced in all directions
Name the five key descriptors of linear motion
Distance Displacement Speed Velocity Acceleration
Define ‘distance’
Total length covered from start to finish
Define ‘displacement’
The shortest straight line route from start to finish
Define ‘speed’
The rate of change in distance
How is speed calculated?
Distance/ time taken
Define ‘velocity’
The rate of change of displacement
How is velocity measured?
Displacement/ time taken
Define ‘acceleration’
The rate of change in velocity
How is acceleration measured?
(fV - iV) / time
What three graphs can be used to show linear motion?
Distance/ time
Speed/ time
Velocity/ time
