Motion Flashcards
Define speed
The distance travelled per unit of time/ how fast an object is moving
Speed is scalar
Define average speed
Total distance / Total time
Define velocity
Speed with direction
Velocity is a vector
Velocity = displacement/time
In a distance-time graph, what is the gradient?
Speed
In a distance time graph, a straight line represents __________.
Constant/Stationary
In a speed-time graph, what is the gradient?
Acceleration
In a speed-time graph, a straight line represents __________.
Constant speed
How is acceleration/deceleration of a velocity-time graph calculated?
By drawing tangents.
Define tangent
A line drawn to roughly represent the angle of a curved line in a velocity-time graph.
Define instantaneous velocity
When the average velocity reaches the exact middle of the graph in terms of time
