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Vf=3Vo; X=80m; t=5s; a=?
UTILIZAMOS DOS ECUACIONES PARA ESTO;
Vf=Vo+at Vf²=Vo²+2ax
3Vo=Vo+5a 9Vo²=Vo²+160a
2Vo=5a 8Vo²=160a
Vo=5a/2 Vo²=160a/8
Vo=√20a
IGUALAMOS ECU.
5a/2=√20a
(5a/2)²=(√20a)²
25a²/4=20a; SIMPLIFICAMOS a
25a/4=20; despejamos a
a=(20*4)/25=3.2m/s² es la aceleración