Science is a hands. on class. this is for safety in a lap

Physics

1 answer:

pshichka [43]3 years ago

7 0

Answer:

Science is also a dog because sometimes it can can be nice such as a flower growing or the pretty flower turning into a flower that can attack you

Explanation:

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if you drop a stone from height of 2.5m. what is the speed of the stone right before it hits the ground?

KonstantinChe [14]

Since the stone was dropped from height, its initial velocity = 0 m/s

Using v² = u² + 2gs.

Where g ≈ 10 m/s², u = initial velocity = 0 m/s, s = height from drop = 2.5 m

v² = u² + 2gs

v² = 0² + 2*10*2.5

v² = 0 + 50

v² = 50

v = √50

v ≈ 7.07 m/s

Hence velocity just before hitting the ground is ≈ 7.07 m/s

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natta225 [31]

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A uniform thin wire is bent into a quarter-circle of radius a = 20.0 cm, and placed in the first quadrant. Determine the coordin

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Answer:

$r_{cm}=[12.73,12.73]cm$