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Mkey [24]
3 years ago
10

With what initial velocity must an object be thrown upward from a height of 2 meters to reach a maximum hieght of 200 meters

Physics
1 answer:
larisa86 [58]3 years ago
6 0
The equations of motion to use for a constant acceleration a = g = -9.81:
v = gt + v_0
y = \frac{1}{2} g t^{2} + v_0t + y_0

at the highest point the velocity must be zero:
0 = gt + v_0 \\ v_0 = -gt
combine both equations:
y =  \frac{1}{2}  \frac{v_0^{2} }{g}  -   \frac{v_0^{2} }{g}  + y_0=  -\frac{1}{2}  \frac{v_0^{2} }{g} + y_0
Solve for v₀:
v_0 =   \sqrt{2g(y_0 - y)}
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El lado positivo que tuvo el auge de la industrialización es principalmente que: Permitió el desarrollo económico de una gran cantidad de países. Marco un nuevo estilo de vida con mayor índice de globalización y producción. Creó una gran cantidad de fuentes de empleo.

Explanation:

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3 years ago
a mass on a spring vibrates in simple harmonic motion at an amplitude of 8.0 cm. if the mass of the object is 0.20kg and the spr
Reil [10]

Answer:

4.06 Hz

Explanation:

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STUDY QUESTIONS
tankabanditka [31]

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3 years ago
A car sitting at a red light begins to accelerate at 2 m/s2 when the light turns green. It continues with this acceleration unti
jek_recluse [69]

Answer:

    x_total = 600 m

Explanation:

This is an exercise and kinematics, let's find the time it takes to reach the velocity  20 m / s

          v = v₀ + a t

           

as part of rest v₀ = 0

          t = v / a

          t = 20/2

          t = 10 s

let's find the distance traveled in this time

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as in this range it has a constant speed

          v = x₂ / t₂

          x₂ = v t₂

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the total distance traveled is

           x_total = x₁ + x₂

           x_total = 100 + 500

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