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IrinaK [193]
2 years ago
5

What two things does gravitational force depend upon?

Physics
1 answer:
Vladimir79 [104]2 years ago
6 0

Answer:

The mass of each object and the distance between the centers of the two objects.

Explanation:

sorry if it didn't help.

You might be interested in
which of the following refers to the motion of an object falling straight down with only the force of gravity acting on it​
MrRissso [65]

Answer:

Since you haven't provided any choices, then the answer is "Free Fall Motion."

Explanation:

In order to learn more about the answer, let's discuss what free fall motion is.

Free Fall- In Physics, this refers to any body motion that is acted upon solely by <u>"gravity."</u> The acceleration in free fall is always downward and there's the absence of other forces. Take note that the<em> acceleration should be the same and is independent of the object's mass. </em>This acceleration is called "acceleration due to gravity."

Gravity- This refers to the force that pulls any object towards the center of the earth.

<u>Examples of Objects in Free Fall Motion</u>

1. A ball dropped at the top of a building.

2.  Dropping a coin from a table.

The ball and the coin are both in free fall motion because they are being pulled by gravity towards the earth. Their acceleration is also constant and there are no other forces acting upon them.

6 0
3 years ago
A plane travels 395,000 meters in 9,000 seconds. What was its speed?
sladkih [1.3K]

When a plane travels 395,000 meters in 9,000 seconds its speed is 395,000 ÷ 9000 = 43.888888 (the 8 repeats) meters per second.

8 0
3 years ago
A 1.2-kg mass is projected from ground level with a velocity of 30 m/s at some unknown angle above the horizontal. A short time
Dmitriy789 [7]

Answer:

K_f = 351.84 J

Explanation:

Using the conservation of energy K:

E_i = E_f

so:

\frac{1}{2}mv^2 = K_f + mgh

where m is the mass, v the initial velocity, K_f is the kinetic energy of the mass as it clears the fence, g the gravity and h the altitude.

Then, replacing values, we get:

\frac{1}{2}(1.2kg)(30m/s)^2 = K_f + (1.2kg)(9.8m/s^2)(16m)

solving for K_f:

K_f = 351.84 J

3 0
3 years ago
What does biological pest control involve?
bogdanovich [222]
Biological control<span> is a </span>bioeffector<span>-method of </span>controlling pests<span> such as </span>insects<span>, </span>mites<span>, </span>weeds<span> and </span>plant diseases, using other living organisms.
<span>Biological pest control relies on</span> natural mechanisms including predation, parasitism, or herbivory<span>, </span>but typically also involves an active human management role.
5 0
3 years ago
An object oscillates back and forth on the end of a spring. Which of the following statements are true at some time during the c
Sindrei [870]

Answer:

a. The object can have zero acceleration and, simultaneously, nonzero velocity.

c. The object can have nonzero velocity and nonzero acceleration simultaneously.

d. The object can have zero velocity and, simultaneously, nonzero acceleration.

Explanation:

For an object in simple harmonic motion, the total mechanical energy (sum of elastic potential energy and kinetic energy) is constant:

E=U+K=\frac{1}{2}kx^2 + \frac{1}{2}mv^2 (1)

where

k is the spring constant

x is the displacement

m is the mass

v is the speed

We can also notice that the force on the spring is given by Hook's law:

F=-kx

And since according to Newton's law we have F = ma, this can be rewritten as

ma=-kx\\a=-\frac{k}{m}x

which means that the acceleration is proportional to the displacement.

So by looking again at eq.(1), we can now states that:

- when the displacement is zero, x=0, the acceleration is zero, a=0, and the velocity is maximum

- when the velocity is zero, v=0, the acceleration is maximum, which occurs when the displacement is maximum

- in all the other intermediate situations, both velocity and acceleration are non-zero

So the correct answers are

a. The object can have zero acceleration and, simultaneously, nonzero velocity.

c. The object can have nonzero velocity and nonzero acceleration simultaneously.

d. The object can have zero velocity and, simultaneously, nonzero acceleration.

8 0
2 years ago
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