Physics - Motion Flashcards
Vector
Quantity with magnitude AND direction
E.g. Weight (N), displacement (m + direction)
Scalar
Quantity with only magnitude
E.g. Mass(kg), bank account
One-dimensional motion
Motion that moves backwards and forwards
Position
Where object is located relative to starting point
Distanc
Length of path taken
Displacement
Change in position
Frame of Reference
A viewing point relative to object being observed. Has – Origin – Magnitude – Direction
Two-dimensional motion
Movement upwards, downwards, forwards and backwards
Three-dimensional
Motion relative to a reference point along 3 axis
Resultant
Single displacement that represents the combined effect of two or more displacements
Average speed
Total distance travelled divided by total time taken. Measured in m.s^-1
Average velocity
Displacement divided by total time taken. Measured in m.s^-1
Acceleration
Rate of change in velocity over time
Deceleration
Negative acceleration
Uniform acceleration
Velocity changes at constant rate