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Lina20 [59]
3 years ago
13

A hoist lifts a 1200 N object a vertical distance of 15 m in 15 s. 18,000 J of work is done on the object to raise it at a const

ant speed. How much power is generated?
Physics
1 answer:
VladimirAG [237]3 years ago
7 0

Answer:

1,200 W

Explanation:

18,000 J / 15s = 1,200 W

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Una persona de 80 kg de masa corre a una velocidad cuya magnitud es de 9m/s. Cual es la magnitud de la cantidad de movimiento? Q
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Responder:

13,01 m / s

Explicación:

Paso uno:

datos dados

masa de la persona 1 m = 80 kg

velocidad de la persona 1 v = 9 m / s

masa de la persona 2 M = 55kg

velocidad de la persona 2 v =?

Segundo paso:

la expresión del impulso se da como

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para la primera persona, el impulso es

P = 80 * 9

P = 720N

Paso tres:

queremos que la segunda persona tenga el mismo impulso que la primera, por lo que la velocidad debe ser

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v = 720/55

v = 13,09

v = 13,01 m / s

Por lo tanto, la magnitud de la velocidad debe ser 13.01 m / s.

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