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3 years ago

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1. Si tengo medio kilo de fruta y te doy un cuarto y tú me das tres cuartos de kilo, ¿cuánto tengo? 2. Si en una carrera te qued

a por recorrer la mitad de la mitad de 1 km, ¿cuánto te falta? 3. ¿Qué pesa mas, un kilo y medio de hierro o tres medios kilos de paja? porfavor es urgente.

1 answer:

Kipish [7]3 years ago

6 0

Answer:

1. Tienes 1 kg de fruta.

2. Queda por recorrer 1/4 km.

3. Ambos pesan lo mismo.

Explanation:

1. Tienes 1/2 kg y cuando te doy 1/4 te queda:

$m = \frac{1}{2} - \frac{1}{4} = \frac{1}{4}$

Ahora cuando te doy 3/4 kg te queda en total:

$m_{T} = \frac{1}{4} + \frac{3}{4} = 1 kg$

Por lo tanto, tienes 1 kg de fruta al final.

2. Si falta por recorrer la mitad de la mitad, tenemos:

$d = \frac{1/2}{2} = \frac{1}{4}$

Entonces, queda por recorrer 1/4 km.

3. El peso (P) del hierro es:

$P = m*g$

$P = (1 + 1/2)kg*9.81 m/s^{2} = 14.72 N$

Y el peso de la paja es:

$P = 3/2 kg*9.81 m/s^{2} = 14.72 N$

Por lo tanto, ambos pesan lo mismo.

Espero que te sea de utilidad!

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