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ivann1987 [24]
3 years ago
14

54 km/h is equal to

Physics
1 answer:
pogonyaev3 years ago
7 0

\Huge{\underline{\underline{\mathfrak{\green{AnsWeR:}}}}}

1 km/h = 5/18 m/s

54 km/h = 54×5/18 m/s

<h2>= 15 m/s</h2>
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What would be the speed of an object just before hitting the ground if dropped 91.5 meters
Aleks04 [339]

Answer:

about 42.35 m/s

Explanation:

Use the equation for accelerated motion (g), and with zero initial velocity that doesn't include time:

v_f^2=v_i^2+2\,a\,\Delta x

which for our case would reduce to:

v_f^2=v_i^2+2\,a\,\Delta x\\v_f^2=0+2\,9.8\,(91.5)\\v_f^2= 1793.4\\v_f=\sqrt{1793.4} \\v_f \approx 42.35

then the velocity just before hitting would be about 42.35 m/s

5 0
3 years ago
Two particles execute simple harmonic motion of the same amplitude and frequency along close parallel lines. They pass each othe
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Answer:

\theta_2 - \theta_1 = 156.93 degree

Explanation:

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\frac{A}{5} = A sin\omega t

now we have

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so the phase other particle in opposite direction is given as

\theta_2 = 180 - 11.53 = 168.46 degree

so we have phase difference given as

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7 0
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How are Babys Born?​
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Read 2 more answers
You and a friend each hold a lump of wet clay. Each lump has a mass of 30 grams. You each toss your lump of clay into the air, w
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Answer:

\ \text{m/s}

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The velocity of the stuck-together lump just after the collision is \ \text{m/s}.

4 0
3 years ago
How do you solving kinematic equations for horizontal projectiles?
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See projectiles are very simple unless you understand its core concepts....projectile is nothing just mixture of upward motion and horizontal motion....
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