3 - Motion Flashcards
5 suvat equations:
s = 1/2(u + v)t
v = u + at
s = ut + 1/2at^2
s = vt - 1/2at^2
v^2 = u^2 + 2as
Displacement
The difference between two positions of an object
Instanteous speed
The speed of an object over a very short interval of time
Average speed
The total distance divided by the time
Velocity
The rate of change in displacement
Acceleration
The rate of change in velocity
Gradient of distance-time graph
Velocity
Gradient of velocity-time graph
Acceleration
Area under a velocity-time graph
Displacement
Vertical and horizontal motion are:
Independent of each other
Stopping distance
Braking distance + thinking distance
Braking distance
The distance the object moves when the brakes have been activated
Thinking distance / reaction time
How far the object moves when an obstacle is visible until the brakes are activated
