Please solve this no.1 for me
I do not want any weird or wrong answer or else I’ll report
If u can’t do this don’t write weird stuffs on the answer side

Answer:

28.28 ms-1

Explanation:

v² = u² + 2as

v² = 20² + 2×2×100

v²= 800

v = 28.28 ms-1

Answer:

That is not true all objects fall at the same speed excepts things like feathers or paper.

Answer: false

Explanation: apex

Answer:

8.6 to west

Explanation:

The initial momentum of the system is given by the sum of the momentum of the launcher and the momentum of the balloon. The correct answer is option C. 7.6 m/s west.

To solve this problem, we can apply the principle of conservation of momentum. According to this principle, the total momentum before an event is equal to the total momentum after the event, assuming no external forces act on the system.

The momentum of an object is calculated by multiplying its mass by its velocity.

Initial momentum = (mass of launcher × velocity of launcher) + (mass of balloon × velocity of balloon)

Let's substitute the given values into the equation:

Initial momentum:

[tex](1.75 kg * 0 m/s) + (1.25 kg * 12.0 m/s)[/tex]

Initial momentum = 15 kg·m/s

Since the net force on the launcher is equal to the reaction force, we can assume no external forces act on the system. Therefore, the total momentum before firing the balloon is equal to the total momentum after firing the balloon.

Final momentum = (mass of launcher + mass of balloon) × final velocity of the launcher

Let's solve for the final velocity of the launcher:

Final momentum:

[tex](1.75 kg + 1.25 kg)[/tex] × Final velocity of the launcher

15 kg·m/s = 3 kg × final velocity of the launcher

Dividing both sides of the equation by 3 kg gives us:

The final velocity of the launcher = 15 kg·m/s / 3 kg

The final velocity of the launcher = 5 m/s

Since the initial velocity of the balloon is to the east, the final velocity of the launcher will be to the west. Therefore, the correct answer is option C. 7.6 m/s west.

For more details regarding initial momentum, visit:

https://brainly.com/question/12450698

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The answer is C

! I took the test lol :)

The rotation is a circulatory motion of an object around the axis and maybe for infinite time and pass internally by the body's own center of mass then the body is said to be spinning.

Hence option C is correct.

Learn more about the describes the best example of rotational motion.

brainly.com/question/20319147.

Answer:12.80

Explanation:

It just is

Answer:

The branch of physics that is most relevant to football is mechanics, the study of motion and its causes.

Explanation:

When the ball leaves the punter's foot, it is moving with a given velocity (speed plus angle of direction) depending upon the force with which he kicks the ball. The ball moves in two directions, horizontally and vertically. Because the ball was launched at an angle, the velocity is divided into two pieces: a horizontal component and a vertical component.

Answer:

Scientific method

Explanation:

Answer:

Maybe you're hanging out around the wrong crowd. The people you are probably choosing to be around are more quiet then you.

Explanation:

Answer:

B.6

Explanation:

speed = distance / time

= 75m / 12s

= 6.25 m/s

The closest answer is b. 6 m/s

heart plz

Answer:

Independent.

Explanation: The Independent variable is sometimes called the "manipulative" because it refers to a quantity that is changed by the experimenter.

Answer:

the newton (N)

the pascal (Pa)

Explanation:

Combinations of base and derived units may be used to express other derived units. For example, the SI unit of force is the newton (N), the SI unit of pressure is the pascal (Pa)—and the pascal can be defined as one newton per square metre (N/m2).

Power = (work done) / (time to do the work)

Power = (750 joules) / (75 seconds)

Power = 10 joules/second

Power = 10 watts

Answer:

I hope you understand it.

I had presented answer very clearly would you mark brainliest

Answer:

12000 miles per hour

Explanation:

If skid Marx went from zero to 10 miles in 3 seconds the his speed would have been 12000 miles per hour.

Answer:

8hours

Explanation:

240/30 = 8

Answer:

Option A - Sound waves must move through a substance

Explanation:

Unlike light waves, sound waves must travel through a medium/substance for such a medium to vibrate and then produce sound.

As a matter of fact sound can't travel through empty space.

Thus, looking at the options given, the correct one is:

Sound waves must move through a substance which is Option A

Answer:

Orbiting observatories have been launched to observe gamma rays (Compton Gamma Ray Observatory and Fermi Gamma-ray Space Telescope), X-rays (Chandra X-ray Observatory and XMM-Newton), ultraviolet radiation (International Ultraviolet Explorer and Far Ultraviolet Spectroscopic Explore

Answer:

3 m/s

For every 1 second it moves 3 positions. Hope that helps!

Explanation:For every 1 second it moves 3 positions. Hope that helps!

tell me if it's right

Answer:

Nope

Explanation:

Because take for example Newtons law

Answer:

poet

Explanation:

Answer:

yeah it may be a risk factor

Explanation:

Answer:

a good person is somebody who is not bad who is good nice good humanity

Answer: 0.05 kgm/s

Explanation:

Answer:

i don't understand

Explanation:

Answer:

last one

Explanation:

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Answer:

the velocity is 10.6m/s

the time taken is 1.5sec

Explanation:

height (h)=61m

from,

[tex] {v}^{2} = 2gh[/tex]

v^2 = 2 (10)(61)

v^2 = 1220

v^2 = 10.6m/s

for time

[tex]v = \frac{1}{2} g {t}^{2} [/tex]

v=10.6

10.6=1×10t^2/2

10.6=5t^2

10.6/5=5t^2/5

t^2=2.12

t=1.5sec

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Answer:

a. The average speed is 4 mi/hr

b. The average velocity is 0 mi/hr

Explanation:

a. The average speed is given by the following formula;

[tex]Average \ speed = \dfrac{Total \ Distance}{Total \ Time}[/tex]

The given information are;

The time it took for one friend to run to his friend's house = 30 minutes

The distance between the two houses = 3 miles

The time it took for the friend to walk home = 1 hour

Therefore, the distance the friend ran going to his friend's house = 3 miles and the distance the friend walked going back his house = 3 miles

The total distance travelled = 3 + 3 = 6 miles

The total time taken = 1 hour + 30 minutes = 1 hour 30 minutes = 1.5 hours

Therefore;

[tex]The \ average \ speed = \dfrac{Total \ Distance}{Total \ Time} = \dfrac{6 \ miles }{1.5 \ Hours} = 4 \ miles \ per \ hour[/tex]

The average speed for the entire trip = 4 mi/hr

b. The average velocity is the total change in position divided by the total time taken to make the change or total displacement divided by the total time for the displacement

Mathematically, average velocity is given as follows;

[tex]The \ average \ velocity = \dfrac{Final \ location - Initial \ location}{Time \ taken \ for \ the \ change \ in \ location}[/tex]

[tex]The \ average \ velocity = \dfrac{Total \ displacement}{Time \ taken \ for \ the \ change \ in \ location}[/tex]

[tex]The \ average \ velocity = \dfrac{Total \ change \ in \ location}{Time \ taken \ for \ the \ change \ in \ location}[/tex]

Given that the friend changed his location to his friend's house, a distance of 3 miles he  we have;

Initial change in location of the friend = 3 miles

After which the friend then relocates back to his house (and we know that it is the same journey but in opposite direction, he  we have;

Final change in location of the friend = -3 miles

We are given that he ran to his friend's house and walked back home in a  total time of 1 hour + 30 minutes = 1.5 hours, therefore, we have;

[tex]The \ average \ velocity = \dfrac{Sum \ total \ of \ change \ in \ location}{Time \ taken \ for \ the \ change \ in \ location} = \dfrac{3 + (-3) }{1.5}[/tex]

[tex]The \ average \ velocity = \dfrac{3 \ miles + (-3) \ miles }{1.5} = \dfrac{0 \ miles }{1.5} = 0 \ mi/hr[/tex]

The average velocity = 0 mi/hr.

Answer:

A. It changes all the time, allowing us to see if the experimental group stays the same.

control group mean the thing the stay the same during the Experiment.

I hope this help

I hope this is correct

Answer:

The correct answer is:

It is used to see if the experimental group causes a change.

Explanation:

I got this right on my Edpuzzle

Hope this helps : )

Answer:

The Internet (social media to be precise)

Explanation:

False science are purported scientific conclusions drawn without any scientific data or procedures followed to arrive at such conclusions. These purported conclusions would have been irrelevant or not widespread without the internet or social media but the easy accessibility to social media globally has made "everyone" to be a scientist or even a publisher without scientific steps.

Some innocent individuals also help share (on the internet) these false science because of the inability to differentiate between the real scientific process and the ones done without any/some due scientific processes hence assisting in promoting these false science unknowingly. If there were no internet, these false sciences would not be this widespread as information will not travel this fast.