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4 years ago

What effect did the Cold War have on the American space program?

Physics

2 answers:

EastWind [94]4 years ago

7 0

Competition with the Soviet Union spurred American space missions.

chubhunter [2.5K]4 years ago

3 0

The answer is D.Competition with the Soviet Union spurred American space missions.

<span>♡♡Hope I helped!!! :)♡♡
</span>

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An object starts at rest and accelerates at a rate of 4 m/s squared, how far does travel after 10 seconds

GenaCL600 [577]

40m/s2 because its already traveling 4m/s soo in 10 second it will be at 40 miles per seconds
4*10
=40

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4 years ago

Lauryn serves a volleyball with a mass of 2.1 kg. The ball leaves her hand with a speed of 30 m/s.

Naya [18.7K]

Hi! Let's see.

<h3><u>TOPIC: Kinetic Energy.</u></h3>

Explanation:

Data:

Mass(m) = 2.1 kilograms
Speed(v) = 30 m/s
Kinetic Energy(Ek) = ?

==================================================================

Use the kinetic energy formula:

$\boxed{\boxed{\bold{E_{k}=\frac{m*(v)^{2}}{2}}}}$

Replace by the data:

$\boxed{E_{k}=\frac{2.1kg*(30\frac{m}{s})^{2}}{2}}}}}$

We multiply speed squared:

$\boxed{E_{k}=\frac{2.1kg*900\frac{m}{s}}{2}}}$

Multiply in the numerator, without forgetting the units:

$\boxed{E_{k}=\frac{1890J}{2}}}}$

Both numerator and denominador operations are divided:

$\boxed{\bold{E_{k}=945\ J}}$

Answer: The kinetic energy is <u>945 Joules.</u>

Cordially Alejanndraax. Greetings!

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3 years ago

How to find velocity right before impact?

lisabon 2012 [21]

1. The problem statement, all variables and given/known data A person jumps from the roof of a house 3.4 meters high. When he strikes the ground below, he bends his knees so that his torso decelerates over an approximate distance of 0.70 meters. If the mass of his torso (excluding legs) is 41 kg. A. Find his velocity just before his feet strike the ground. B. Find the average force exerted on his torso by his legs during deceleration. 2. Relevant equations I can't even seem to figure that part out. Help please? 3. The attempt at a solution I don't know how to start this at all

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4 years ago

Consider a perfectly reflecting mirror oriented so that solar radiation of intensity I is incident upon, and perpendicular to, t

VLD [36.1K]

Answer:

Frad = 2IA/C

Explanation:

see attached file

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3 years ago

When a bicycle coasts uphill, it moves slower and slower as it climbs. Why?

astra-53 [7]

Letter B because it is gaining more potential energy as it SLOWLY climbs up the hill.

the less motion the more potential energy there is

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3 years ago

Read 2 more answers