Gravity is a force between any two objects with mass. Why doesn't a person feel a gravitational force between him/herself and another person?A) A person doesn't exert a gravitational force.

B) The two gravitational forces cancel each other out.

C) The gravitational forces of people is so small it is
overshadowed by that of Earth.

D) There are so many people we are actually balanced by all the different gravitational forces.

Answers

Answer 1

Answer: The answer would be C. The gravitational force between two bodies however it is too small that it is overshadowed by that of earth. Gravitational force is the weakest force of all. Each body with a mass exerts a gravitational force onto each other but this value is so small that it can be neglected.

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A roller coaster starts down a hill at 10 m/s. Three seconds later, its speed is 32 m/s. What is the roller coaster’s acceleration?Question 1 options:-7.3 m/s-7.3 m/s23 m/s3 m/s 2SaveQuestion 2 (2 points) Question 2 UnsavedNatalie accelerates her skateboard along a straight path from 4 m/s to 0 m/s in 25.0 s. Find the acceleration.Question 2 options:-6.25 m/s20.16 m/s2-0.16 m/s26.25 m/s2SaveQuestion 3 (2 points) Question 3 UnsavedFind the average acceleration of a northbound subway train that slows from 12 m/s to 9.6 m/s in 0.9 sQuestion 3 options:-2.7 m/s22.7 m/s2-2.7 m/s2.7 m/sSaveQuestion 4 (2 points) Question 4 UnsavedWhat is a chicken’s rate of acceleration that speeds up from 4 mph (mi/h) to a top speed of 9 mi/h in 0.5 hr?Question 4 options:2.5 mi/h/s-2.5 mi/h/s2.5 mi/h210 mi/h2SaveQuestion 5 (2 points) Question 5 UnsavedWhich units would be appropriate to measure Acceleration?Question 5 options:m/s with directionm/s2Kg (m/s)m/sSave
a warrior swings a slingshot in a horizontal circle above his head at a constant speed. The sling is 1.5 m long, and the stone has a mass of 50 g. The tension in the string is 3.3 N. When he releases the sling, what will the stone's speed be?
Will the sun ever explode as a type i supernova?

The gases cast off by a dying star are called

Answers

Answer:

Planetary Nebula

Explanation:

A star has its own life cycle very similar to a human life cycle where it takes birth, grows up, becomes old and then dies. The life cycle of stars and human differ in the duration of cycle and end result.

When a star dies it can end up differently basis its mass. Here one of the ends of a star is mentioned where it casts off all the gases. Such type of situation will create a planetary nebula. One famous example of such nebula is Crab Nebula.

Planetary Nebulae hope that helps

The speed of light in that material is slower or faster?

Answers

Faster..................

Name human body organs where magnetism is significant

Answers

It has been hypothesized, and some studies have supported the conjecture,
that certain species of insects and birds are able to sense the direction of external
magnetic fields.

I don't think there is any such notion where human beings are concerned.

A skier starting from rest accelerates in a straight line down a 43,000 m slope at 1 m/s. How fast were they moving after 5 s?

Answers

Answer:

5m/s

Explanation:

The skier accelerates at 1 m/s, then, the acceleration is:

$a=1(m)/(s^2)$

to find the speed after 5 seconds you use the following formula:

$a=(v-v_o)/(t)$

but vo = 0m/s because the skier is at rest at the beginning.

You do v the subject of the formula:

$v=at=(1(m)/(s^2))(5s)=5(m)/(s)$

hence, the velocity is 5m/s

The slope of a position vs time graph is equal to what

Answers

Since I am not sure what you are asking, I am just going to throw a bunch of information at you and hope that the answer you are seeking is present.

1) The slope is equal to the velocity at a given time. In other words, find the velocity and evaluate at it at that specific value of time.

2) Velocity = acceleration x time, assuming the acceleration is constant.

3) Velocity = area under the curve of acceleration, evaluated from the start time to the end time.

Hope this helps.

Final answer:

The slope of a position vs time graph represents the average velocity of the object. The velocity corresponds to the rate of change in the object's position over time. Further analysis reveals that the slope of a velocity vs. time graph signifies the object's acceleration.

Explanation:

In the context of physics, when analyzing a position versus time graph, the slope represents the object's average velocity. The slope is calculated as the rise over run. Rise is the change in position, or displacement, and run is the change in time. For example, Figure 3.9 shows the position (x(t)) versus time graph. The slopes of the tangent lines at specific times (0.25s, 0.5s, and 1s) indicate the object's velocity at the corresponding times. Therefore, the slope of a position vs time graph equals the velocity of the object.

Further analysis of a velocity versus time graph would then show that its slope represents the object's acceleration. This highlights the direct relationship between position, velocity, and acceleration in motion physics.

Learn more about Slope of Position vs Time Graph here:

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A boy cycles a distance of 960 m from home to school in 6 minutes. Calculate his average speed for the journey. Write your answer in m/s.

Answers

The average speed of the boy was 2,67m/s.

The average speed is found when we divide the distance traveled (Δx) by the travel time (Δt).

The formula is:

$\Huge\boldsymbol{V_(av)=(\Delta x)/(\Delta t)}$

Solving:

Data:

Distance: 960m

Time: 6min ⇒ (6 · 60) ⇒360s

We have:

$\LARGE\text{$V_(av)=(960)/(360)$}\n\n\n\n\Huge\boldsymbol{V_(av)\approx2,67m/s}$

The average speed of the boy for his journey is approximately2,67m/s.

_________

Know more:

About speed:

Hope this helps!

To calculate the average speed of the boy's journey, you can use the formula:

Average Speed (in m/s) = Distance (in meters) / Time (in seconds)

First, you need to convert the time from minutes to seconds because 1 minute equals 60 seconds:

6 minutes = 6 * 60 seconds = 360 seconds

Now, you can calculate the average speed:

Average Speed = 960 meters / 360 seconds = 2.67 m/s

So, the boy's average speed for the journey is approximately 2.67 meters per second.

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