s(t)=1/2 at2 + vt+c…
s =1/2 at2 + vt + c
s - c = 1/2 * at2 + vt | * 2
2s - 2c = at2 + 2vt | : a
( 2s - 2c ) / a = t2 + ( 2v/a ) * t
t2 + ( 2v/a ) * t = ( 2s - 2c ) / a
quadratische Ergänzung
t2 + ( 2v/a ) * t + ( v/a)2 = ( 2s - 2c ) / a + ( v/a)2
( t + v/a )2 = ( 2s - 2c ) / a + ( v/a)2
t + v/a = ± √ [ ( 2s - 2c ) / a + ( v/a)2 ]
t = ± √ [ ( 2s - 2c ) / a + ( v/a)2 ] - v/a
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