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yKpoI14uk [10]
2 years ago
15

Trolley A, of mass 180 g, is moving at a velocity of 4 m/s towards trolley B

Physics
1 answer:
Fed [463]2 years ago
8 0

Answer:

<h2>To solve typical questions like this we can use law of conversation of linear momentum...which is</h2>

<h2>T.I.L.M.=T.F.L.M.</h2>

(Total initial linear momentum = total final linear momentum.)

<u>Momentum = mass × velocity</u>

<h2>T.I.L.M = T.F.L.M</h2>

180×4 + 120×0 = 180×0 + 120×V

(180 ×4)/120 = V

<h2>6Ms^-1 = v</h2>
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Which of the following was an effect of the French Revolution?
lozanna [386]

Answer: C. the elimination of special privileges for members of the first and second estates

Explanation:

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From the options given, the effect of the French Revolution was the the elimination of special privileges for members of the first and second estates. Therefore, the correct option is C.

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3 years ago
A 3-kg wheel with a radius of 35 cm is spinning in the horizontal plane about a vertical axis through its center at 800 rev/s. A
Kruka [31]

Answer:

\omega_f = 585.37 \ rev/s

Explanation:

given,

mass of wheel(M) = 3 Kg

radius(r) = 35 cm

revolution (ω_i)=  800 rev/s

mass (m)= 1.1 Kg

I_{wheel} = Mr²

when mass attached at the edge

I' = Mr² + mr²

using conservation of angular momentum

I \omega_i = I' \omega_f

(Mr^2) \times 800 = ( M r^2 + m r^2) \omega_f

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Answer:

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Explanation:

Given:

a = 3.30 m/s²

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v = 88.0 m/s

x₀ = 0 m

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x = 1173.33 m

Rounded to 3 sig-figs, the runway must be at least 1170 meters long.

6 0
3 years ago
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