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Aliun [14]
2 years ago
12

What is the height of a building that an object is dropped from if it has a mass of 3 kg and hits the ground with a velocity of

50 m/s?
Physics
1 answer:
Marizza181 [45]2 years ago
8 0

Answer:

125 m

Explanation:

m = 3kg

v = 50m/s

u = 0m/s

a = +g = 10m/s²

s = H = ?

using the formula,

v² = u² + 2as

50² = 0² + 2(10)(H)

2500 = 20H

H = 2500/20

H = 125m

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Answer:

1st, 2nd, and 4th

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1st conserves gasoline/petroleum

2nd conserves electricity

4th conserves paper

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2 years ago
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A force causes a mass of 4 kg to have an acceleration of 8 m/s2. Suppose something causes the mass to be one-quarter of its orig
solniwko [45]

Explanation:

From Newton's second law:

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Given that m = 4 kg and a = 8 m/s²:

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32 N = (1 kg) a

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2 years ago
Alanna spots a bird in her back yard. The bird is sitting on a tree. Explain how the outer coverings of the bird and tree are di
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Answer:

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2 years ago
Use Snell's Law to solve the following:
azamat

Answer:

1.171

Explanation:

if n₁sinΘ₁=n₂sinΘ₂, then n₂=n₁sinΘ₁ / sinΘ₂;

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3 0
3 years ago
What is the change in length of a 1400. m steel, (12x10^-6)/(C0) , pipe for a temperature change of 250.0 degrees Celsius? Remem
8090 [49]

Answer:

\Delta L = 4.2 m

Explanation:

As per the formula of thermal expansion we know that

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