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Len [333]
4 years ago
7

When you drop a ball it accelerates downward at 9.8 m/s2. If you instead throw it downward, then its acceleration immediately af

ter leaving your hand, assuming no air resistance, is
a. 9.8 m/s2.

b. more than 9.8 m/s2.

c. less than 9.8 m/s2.

d. Cannot say, unless the speed of throw is given.​
Physics
1 answer:
damaskus [11]4 years ago
6 0

Answer:

a. 9.8 m/s2.

Explanation:

The acceleration depends on the force of gravity. It's independent of the velocity of the ball.

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A projectile is fired at an upward angle of 29.7° from the top of a 108-m-high cliff with a speed of 130-m/s. What will be its
german

Answer:

79.2 m/s

Explanation:

θ = angle at which projectile is launched = 29.7 deg

a = initial speed of launch = 130 m/s

Consider the motion along the vertical direction

v₀ = initial velocity along the vertical direction = a Sinθ = 130 Sin29.7 = 64.4 m/s

y = vertical displacement = - 108 m

a = acceleration = - 9.8 m/s²

v = final speed as it strikes the ground

Using the kinematics equation

v² = v₀² + 2 a y

v² = 64.4² + 2 (-9.8) (-108)

v = 79.2 m/s

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On the Celsius scale, at what temperature does water boil?
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2. A digital camera records each image as 8 megapixels, with each pixel transferring 14 bits of information. What is the minimum
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Given what we know, we can confirm that due to its relatively low image quality, any memory card with at least one MB will be sufficient to hold the 120 images taken.

<h3>Why is one MB enough?</h3>

The photos are taken at 8 megapixels, with each one occupying 14 bits of information. A megabit consists of one million bits of potential storage. Therefore, the 120 pictures will occupy roughly 1% of the available storage of a 1 MB memory card.


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To learn more about megabits visit:

brainly.com/question/22735284?referrer=searchResults

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