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Physics (graphs (position vs time (displacement distance average…
Physics
graphs
position vs time
displacement
distance
average velocity
average speed
instantaneous velocity/speed
average slope = inst slope
if a function is a straight line
velocity vs time
displacement is area under velocity-time line
speed vs time
acceleration vs time
change in velocity is area under acc-time line
Displacement vs time
Instantaneous velocity
dx/dt
Vavg=Vinst
if Vinst is constant
Slope of the position vs time graph = Vinst
a=const: V=Vi+at
V^2=Vi^2+2a*change in time
average speed != average velocity
Velocity=displacement/change in time
displacement=Xf-Xi
speed is a magnitude of a total velocity
not just in one direction
instantaneous velocity works only at given moment in time
cause of definition
you can change acceleration by
changing direction
or
changing speed
average velocity is also equal final velocity - initial velocity /2
jerk is change in acceleration over time
acceleration is equal change in velocity over change in time
acceleration= final velocity squared - initial velocity squared/ 2* displacement