Linear Motion Flashcards
Linear motion
Movement of a body or part of a body in a straight or curved line where all parts of the body move in the same distance in the same direction at the same time
Direct force
A force applied through the centre of mass resulting in linear motion
Centre of mass
The point at which a body is balanced in all direction. The point from which weight appears to act
Distance
The total length covered from start to finish positions (meter)
Displacement
The shorted straight line route from start to finish positions (meter)
Speed
The rate of change in distance (m/s) calculated using:
Distance / time taken =speed
Velocity
The rate of change in displacement (m/s) calculated using:
Displacement / time taken = velocity
Acceleration
The rate of change in velocity (m/s/s) calculated using:
(Final velocity - initial velocity) / time taken
Deceleration
The rate of change (decrease or negative) in velocity (m/s/s)
Distance time graph
A visual representation of the distance travelled against the time taken
Gradient
The slope of a graph at a particular moment in time
Gradient = change in Y axis / change in X axis
Speed time graph
A visual representation of the speed of motion plotted against the time taken
Velocity time graph
A visual representation of the velocity of motion plotted against the time taken