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2 years ago

Please help Which graph shows the change in velocity of an object in free fall?

Physics

1 answer:

dmitriy555 [2]2 years ago

3 0

The graph that shows the change in velocity of an object in free fall is graph B.

<h3>What is velocity?</h3>

Velocity is the speed of a body in a specified direction.

It is also defined as the ratio of displacement and tome.

Velocity is a vector quantity.

The change in velocity of a body is known as acceleration.

The velocity of a body undergoing free fall increases by a constant value given as by the acceleration due to gravity.

The graph which depicts this change in velocity is B.

Therefore, the graph that shows the change in velocity of an object in free fall is graph B.

Learn more about velocity and free fall at: brainly.com/question/24520854

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3 years ago

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An astronaut lands on a new, recently discovered planet in a different star system. The astronaut measures the acceleration due

Nezavi [6.7K]

Answer:

The radius of the new planet is ~2.04 * 10⁶ m, or 2,041,752 m.

Explanation:

We can use Newton's Law of Universal Gravitation:

$\displaystyle F_g=G\frac{Mm}{r^2}$

Let's look at Newton's 2nd Law:

$F=ma$

We can set these equations equal to each other:

$\displaystyle G\frac{Mm}{r^2} =ma$

The mass of the second mass (astronaut) cancels out. We are left with:

$\displaystyle G\frac{M}{r^2} =a$

We are solving for the radius of the new planet, so we can rearrange the equation:

$\displaystyle r=\sqrt{\frac{GM}{a} }$

Substitute in our known values given in the problem (G = 6.67 * 10⁻¹¹ ; M = 7.5 * 10²³ ; a = 12).

$\displaystyle r =\sqrt{\frac{(6.67\times 10^{-11})(7.5 \times 10^{23}}{12} }$
$r=2.04 \times 10^6$

The radius of the new planet is ~2.04 * 10⁶ m.

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2 years ago

Does the nucleus of an atom have a positive or negative charge?

Flura [38]

A.
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3 years ago

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Which of the following is the method by which air is cooled in the food storage component of a refrigerator?

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Answer: Convection :)

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2 years ago

Dona rolls a marble with a speed of 5.0/m/s across a level table that is 1.6m above the floor. Upon reaching the edge of the tab

san4es73 [151]

Answer:

2.9 m

Explanation:

First find the time it takes to reach the floor.

y = y₀ + v₀ t + ½ at²

(0 m) = (1.6 m) + (0 m/s) t + ½ (-9.8 m/s²) t²

t = 0.571 s

Next, find the distance it travels in that time.

x = x₀ + v₀ t + ½ at²

x = (0 m) + (5.0 m/s) (0.571 s) + ½ (0 m/s²) (0.571 s)²

x = 2.86 m

Rounded to two significant figures, the marble travels 2.9 meters in the x direction.

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3 years ago