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Here is a simple example, as time goes by, the speed of animation playback is increasing

enter image description here

The built-in function Animate seems to only play animation at a uniform speed, there is a related option DefaultDuration, I don't know how to use it correctly

enter image description here

What is the simple way to create this kind of animation in Mathematica?

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    $\begingroup$ You could make your own nonlinear function of time and use that to animate. $\endgroup$
    – MarcoB
    Commented Jan 29, 2021 at 13:32
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    $\begingroup$ Instead of accelerating the Animate you may accelerate the expression inside Animate. E.g. let's call exp[i] for i=1 to 100 the expression you want to animate, then exp[i^2] for i=1 to 10 will display accelerated. $\endgroup$ Commented Jan 29, 2021 at 15:09

1 Answer 1

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Just to show what I meant in comments:

With[{tmax = 30},
 Animate[
   Graphics[
     {
       Black, Arrowheads[Large],
       Arrow[{{0, 0}, {t^3 + 10, 0}}]
     },
     PlotRange -> {{-20, tmax^3 + 10}, {-300, 300}},
     PlotRangePadding -> {Scaled[0.05], Scaled[.2]}
   ],
   {t, 1, tmax}
 ]
]

animation

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