x1= 20-20t x2= -5+10t
20-20t= -5+10t
30t=25
t=0,83 (с)
x1=20-20*0,83=3,4 (м)
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x1= 20-20t x2= -5+10t
20-20t= -5+10t
30t=25
t=0,83 (с)
x1=20-20*0,83=3,4 (м)