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Margarita [4]
3 years ago
12

Sonny and Manuel had to set up a demonstration to model one of Newton's laws. This is a photo of their demonstration. When Manue

l hit the index card with his finger, the penny fell into the cup. Their demonstration modeled Newton's
Physics
2 answers:
sladkih [1.3K]3 years ago
6 0
The answer is A) First law of motion.
Slav-nsk [51]3 years ago
6 0

Answer:

<h2>Law of inertia: Newton's first law.</h2>

Explanation:

This experiment can demonstrate Newton's first law which states "<em>an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force".</em>

<em />

In this case, the penny is at rest until Manuel exerts a force on the object, making it change its state of motion. So, basically, an external force is what made the penny to move and fall into the cup, if Manuel doens't exert this external force, then the peeny won't fall into the cup. That's Netwon's first law, the law of inertia.

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g (15 points) Picture taken from problem 13-35. A 2000 kg truck is traveling at 25 meters/second. The driver suddenly hits the b
otez555 [7]

Answer:

Δx = 3.99 m

Explanation:

To determine distance, use kinetic energy

will make it short and easy.  

KE=1/2mv2 and KE=Δxmgμ

 

Set the equations equal to each other

1/2mv2=Δxmgμ            (Note: The masses cancel )

 1/2v2=Δxgμ                  Solve for Δx

where g=9.8  

Δx=v2/(2gμ)                   Δx = 25 / (2 * 9.8 * 0.32)     Δx = 3.99 m

Please let me know if its correct, if not report it so we can correct it.

6 0
4 years ago
A rocket burns fuel at a rate of 199 kg/s and exhausts the gas at a relative speed of 9 km/s. Find the thrust of the rocket. Ans
andreyandreev [35.5K]

Answer:

1.791 MN

Explanation:

Thrust of the rocket can be found using the relation

T = v.dm/dt, where

T = thrust off the rocket

v = speed of the rocket, 9 km/s = 9000 m/s

dm/dt = rate at which fuel burns, 199 kg/s

Substituting the values into the formula, we have

T = 9000 * 199

T = 1791000 N

T = 1.791*10^6 N

Since 1 MN = 10^6, thus

T = 1.791 MN

7 0
3 years ago
8. True or false. A transform boundary formed the Himalaya Mountains.
Igoryamba

Answer:

False

Explanation:

A convergent plate boundary formed the Himalaya Mountains.

5 0
2 years ago
If two objects of the same size move through the air at different speeds, which encounters the greater air resistance?
butalik [34]
The one moving with the greater velocity.
8 0
3 years ago
3. The space shuttle aims for an orbit about 250 km above the surface of the earth. In orbit, the mass
Contact [7]

The orbital speed of the space shuttle is 2.12 x 10⁴ m/s.

<h3>Orbital speed of the space shuttle</h3>

The orbital speed of the space shuttle is calculated as follows;

V = \sqrt{\frac{GM}{r} }

where;

  • G is gravitational constant
  • M is mass of the Earth
  • r is the distance from the center point of the planet

V = \sqrt{\frac{6.67 \times 10^{-11} 5.98 \times 10^{24}}{(250 + 638) \times 10^3} }\\\\V = 2.12 \times 10^4 \ m/s

Thus, the orbital speed of the space shuttle is 2.12 x 10⁴ m/s.

Learn more about orbital speed here: brainly.com/question/22247460

7 0
2 years ago
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