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Kinematics - Coggle Diagram
Kinematics
Velocity-time graph
gradient represents acceleration
area under graph represents displacement
influence by acceleration and displacement
shows changes in velocity of a moving object over time
Displacement-time graph
Shows how far the object travels in one direction(vector)
displacement of a moving object changes with time
Gradient represents velocity
The greater the gradient, the faster the object is moving.
Formula for constant acceleration
u = initial velocity (m/s)
a = acceleration (m/s^2)
sf = final position (m)
si = initial position (m)
t = time taken (s)
v = final velocity (m/s)
velocity is NOT constant.
Value of acceleration does not change
definitions
displacement
shortest distance from the initial to the final position
the object's overall change in position.
SI unit
m (metres)
Vector quantity
Displacement = Final position - initial position
denoted by s
Velocity
Vector quantity
SI unit
m/s
rate of change of displacement
Velocity = Displacement/ time
Use to calculate displacement
denoted by v
Must be going one direction
Acceleration
SI unit
m/s^2
rate of change of velocity
Increase in the value of velocity
denoted by a
negative value acceleration
Deceleration
No acceleration = constant velocity
the object is still moving
Accelerate-time graph
change in velocity in the given interval of the time.
area under curve represents change in the velocity of object
motion
uniform motion
Speed of object is constant
Acceleration is constant
Velocity is increasing linearly
Accelerate value is known
Non-uniform motion
has different acceleration in the whole motion
Value of velocity keeps changing non-linearly
Free fall
downward movement under the force of gravity only
same rate of acceleration
Air resistance is negligible
