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3 years ago

Signment

Physics

1 answer:

jeka943 years ago

3 0

Answer:

v = 5.15 m/s

Explanation:

At constant velocity, the cable tension will equal the car weight of 984(9.81) = 9,653 N

As the cable tension is less than this value, the car must be accelerating downward.

7730 = 984(9.81 - a)

a = 1.95 m/s²

kinematic equations s = ut + ½at² and v = u + at

-5.00 = u(4.00) + ½(-1.95)4.00²

u = 2.65 m/s the car's initial velocity was upward at 2.65 m/s

v = 2.65 + (-1.95)(4.00)

v = -5.15 m/s

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Answer:

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Explanation:

Given information:

diameter of the disc, d = 11 cm, r = 5.5 cm = 0.055 m

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Answer:

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Explanation:

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$\sigma = \frac{W}{n\cdot A_{T}}$ (Eq. 1)

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$\sigma$ - Presión, medida en libras por pulgada cuadrada.

$W$ - Peso de la persona, medida en libras.

$n$ - Cantidad de tacos en los zapatos, adimensional.

$A_{T}$ - Área del taco, medida en pulgadas cuadradas.

Si conocemos que $W = 180\,lb$ , $n = 20$ y $A_{T} = 0.01\,in^{2}$ , la presión es:

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3 years ago

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Answer:

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$v = \frac{d}{t}\\$

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v = average speed during the trip = ?

d = total distance driven by the car = 1200 km

t = time taken for the traveling = 19.5 hr

Therefore,

$v = \frac{1200\ km}{19.5\ hr}\\\\$

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