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Natali5045456 [20]
3 years ago
13

Brainliest for whoever is first and right.

Physics
1 answer:
devlian [24]3 years ago
3 0

The answer is 9.8, did this last year in AP Science

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A rock is thrown upward with a velocity of 22 meters per second from the top of a 25 meter high cliff, and it misses the cliff o
Mice21 [21]

Answer:

The rock will reach 9 m from the ground at eaxactly 5.06 s after it was initially thrown upwards.

Explanation:

We will use the equations of motion for this.

u = initial velocity of the rock = 22 m/s

g = acceleration due to gravity = -9.8 m/s²

y = vertical position of the rock at a time t = 9 m

y₀ = initial height of the rock = 25 m

t = time it takes for the rock to reach height of 9 m.

(y-y₀) = ut + 0.5gt²

(9 - 25) = 22t + 0.5(-9.8)t²

- 14 = 22t - 4.9t²

4.9t² - 22t - 14 = 0

solving this quadratic equation,

t = 5.055 s or - 0.565 s

Since time cannot be negative,

t = 5.055 s = 5.06 s

Hope this Helps!!!

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3 years ago
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6.All wheelchairs may be secured so that the user is facing the curb side of the vehicle.
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All wheelchairs may be secured so that the user is facing the curb side of the vehicle is true. The answer is letter A. It provides a unique 180 degree powered rotation which makes it possible to raise, lower and rotate fully. 

6 0
3 years ago
Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds
faltersainse [42]

Answer:

The shadow will appear dark

Explanation:

Your shadow is caused by your body blocking incident light rays from reach the ground under the shadow area. The absence of light means there will be no light reflected from the ground making it appear dark.

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What is it called when there’s an atom that has fewer neutrons than protons and more electrons than protons??l
HACTEHA [7]

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Explanation: This is because an atom has fewer neutrons than protons and more electrons than protons

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What is the difference between m/s and m.s.​
vfiekz [6]

Answer

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m/s^2 is (m/s)/s ie rate of change of velocity per sec. ie accelerationplanation:

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3 years ago
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