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MrRa [10]
2 years ago
11

Quinn is testing the motion of two projectiles x and y by shooting them from a sling shot. what can we say best describes the mo

tion of the projectiles ? assume air resistance is not a factor the horizontal velocity of projectile x is changing, and the vertical velocity of projectile y is constant. the vertical velocity of projectile y is changing, and the horizontal velocity of projectile x is constant. the horizontal acceleration of projectile x is –9.8 m/s2, and the vertical acceleration of projectile y is 0 m/s2. the horizontal acceleration of projectile y is –9.8 m/s2, and the vertical acceleration of projectile y is 0 m/s2.
Physics
1 answer:
morpeh [17]2 years ago
4 0

The vertical velocity of projectile y is changing, and the horizontal velocity of projectile x is constant because the projectile motion occurs due to gravity.

<h3>Describes the motion of the projectiles?</h3>

Projectile motion is a type of motion of an object that is projected vertically upward into the air and moving due to gravity and it also moves horizontally into the air moving independently of gravity.

So we can conclude that The vertical velocity of projectile y is changing, and the horizontal velocity of projectile x is constant because the projectile motion occurs due to gravity.

Learn more about projectile here: brainly.com/question/24216590

#SPJ1

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4. Calculate the kinetic energy of a 4.7 kg object moving at a speed of 7 m/s. SHOW YOUR WORK
SashulF [63]

Answer:

\boxed {\boxed {\sf 115.15 \ J}}

Explanation:

Kinetic energy is the energy an object possesses due to motion. It is calculated with the following formula.

E_K= \frac{1}{2} mv^2

The mass of the object is 4.7 kilograms. The velocity of the object is 7 meters per second.

  • m= 4.7 kg
  • v= 7 m/s

Substitute the values into the formula.

E_K= \frac{1}{2} (4.7 \ kg)(7 \ m/s)^2

Solve the exponent.

  • (7 m/s)²= 7 m/s * 7 m/s = 49 m²/s²

E_K= \frac{1}{2} (4.7 \ kg)(49 \ m^2/s^2)

Multiply the numbers together.

E_K = 2.35 \ kg * 49 \ m^2/s^2

E_K= 115.15 \ kg*m^2/s^2

Convert the units. 1 kilogram square meter per square second is equal to 1 Joule.

E_K= 115.15 \ J

The object has <u>115.15 Joules</u> of kinetic energy.

3 0
2 years ago
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think of two school rules and briefly describe how these rules help protect health and why its important to follow them.
Softa [21]

Answer:

Wash your hand when you are done using the restroom because you could spread germs if not.

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Answer:

C

Explanation:

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For there to be a charge of 0, there would be the same amount of charges for both proton and neutron. To get a charge of 1, you will need 1 more proton.


hope this helps
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