Modelica mode

​x
 
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model BouncingBall
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  parameter Real e = 0.7;
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  parameter Real g = 9.81;
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  Real h(start=1);
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  Real v;
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  Boolean flying(start=true);
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  Boolean impact;
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  Real v_new;
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equation
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  impact = h <= 0.0;
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  der(v) = if flying then -g else 0;
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  der(h) = v;
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  when {h <= 0.0 and v <= 0.0, impact} then
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    v_new = if edge(impact) then -e*pre(v) else 0;
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    flying = v_new > 0;
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    reinit(v, v_new);
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  end when;
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  annotation (uses(Modelica(version="3.2")));
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end BouncingBall;
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​

Simple mode that tries to handle Modelica as well as it can.

MIME types defined: text/x-modelica (Modlica code).