A merry go round at the park is spinning. You stand on the outer edge and are traveling at constant speed of 5 m/s. You walk halfway toward the center. What happened to your acceleration?

Answers

Answer 1

Answer:

a' = 2a

Explanation:

The acceleration during this circular motion is the centripetal acceleration. Initially, the acceleration will be given as:

a = v²/r   --------------------- equation (1)

Where,

a = centripetal acceleration at outer edge

v = speed of merry go round = 5 m/s

r = distance from center of round to person (outer edge)

Now, when the person moves half way towards center. Then, the acceleration becomes:

a' = v²/r'

where,

r' = r/2

Therefore,

a' = v²/(r/2)

a' = 2v²/r

using equation (1):

a' = 2a


Related Questions

Which one of the following choices was not a stage in the formation of Earth's atmosphere?

A. A super-dense atmosphere composed mostly of methane.
B. A volatile atmosphere composed of carbon dioxide and water vapor.
C. An oxygenated atmosphere with nitrogen and free oxygen.
D. A primordial atmosphere composed of hydrogen and helium.

Answers

Answer:

A

Explanation:

cause I'm big brain :)

3
A comb is charged negatively when coming a dry hair
is there a tranfer of charge alone or mass also

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Answer:

there is transfer of change alone

Answer:

someone pls explain this question

the waves that travel along the surface of the oceans are referred to as? A) surface waves B) circular waves C) transverse D) longitudinal

Answers

Answer:

surface waves

Explanation:

they are on the surface of the ocean

A ball is dropped from a height of 50 meters above the ground. What is its velocity the moment it hits the ground?

Answers

Answer:

The distance is 45m. (s)

Acceleration is 9.8 m/s^2 (acceleration due to gravity). (a)

We have to find the time (t)

By the 3rd equation of motion,

s = ut + 1/2 at^2 (here u is the initial velocity of the ball)

Since the initial velocity was 0 m/s, the formula becomes s = 1/2 at^2.

(substituting the values in the formula)

45 = 1/2 x 9.8 x t^2

45 = 9.8/2 x t^2

45 = 4.9 x t^2 (9.8/2 = 4.9)

(divide 4.9 on both sides)

45/4.9 = 4.9 x t^2 / 4.9

9.1836 = t^2

3.030 = t

So it takes approximately 3 seconds for the ball to reach the surface of the earth (neglecting air resistance). You can try the same with 50 m .

The velocity of the ball the moment it hits the ground is equal to 31.3 m/s.

What is the equation of motion?

Equation of motion has established a relation between the velocity of the body and acceleration of the body when the body is moving with uniform acceleration along a straight line. The distance traveled in a specific time has expressed a set of equations termed equations of motion.

The first equation of motion can be expressed as follows:

v = u + at

The second equation of motion can be expressed as follows:

S= ut + (1/2)at²

Where u is the initial velocity of a body, v is the final velocity, S is the distance, a is the acceleration and t is the time.

Given, the distance traveled by the ball, S = 50 m

and, the initial velocity of the ball, u = 0 as ball is at rest initially.

From the second equation of motion, find the value of 't':

50 = (0) t + (1/2)× (9.8) ×(t²)

t = 3.19 sec

Now from the first equation of motion, find the value of the final velocity of the ball:

v = (0) + (9.8) (3.19)

v = 31.3 m/s

Therefore, the ball hits the ground with a velocity of 31/3 m/s.

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Which of the following accurately describes circuits? Question 6 options: A) In a parallel circuit, the same amount of current flows through each part of the circuit. B) In a series circuit, the amount of current passing through each part of the circuit may vary. C) In a series circuit, the current can flow through only one path from start to finish. D) In a parallel circuit, there's only one path for the current to travel.

Answers

Answer:

Explanation: C is the correct one

because A) the current divides into parts for each branch

B)the current doesn't varry in series

D) in parallel the current divides and passes in all branches

Which of the following best describes the velocity of an object? *
8 points
A. 30 m/s
B. 30 m to the East
C. 30 m/s to the East
D. 30 m

Answers

A. 30 m/s . . . speed

B. 30 m to the East  . . . displacement

C. 30 m/s to the East  . . . velocity

D. 30 m . . . distance

Which of the following objects had the greatest force applied to it? *

A) An object with a mass of 10 kg and an acceleration of 2.5 m/s^2
B) An object with a mass of 12 kg and an acceleration of 3.0 m/s^2
C) An object with a mass of 20 kg and an acceleration of 1.5 m/s^2
D) An object with a mass of 15 kg and an acceleration of 1.0 m/s^2

Answers

Answer:

B) is the answer

Explanation:

A) is 25 N

B) is 36N

C) is 30N

D)15N

Guys plz help answer this!!!!

Answers

Carbon dioxide is the answerrr

Anyone play Among US?

Answers

Answer:

Yes

Explanation:

Its a good game.

Answer:

oof

Explanation:

4. Density is a property of all matter.
True
False
Neither true or false due to lack of information

Answers

Pretty sure it’s true

A roller coaster with a potential energy of 235,200 J sits at the top of a 30 m high hill. What is the mass of the roller
coaster? (Formula: PE = mgh)
O 800 kg
O 7,840 kg
O 8,000 kg
O 78,400 kg

Answers

Answer:

800 kg

Explanation:

I just did it :)

State the career function of civil engineering​

Answers

Answer:

Civil engineers design major transportation projects. Civil engineers conceive, design, build, supervise, operate, construct and maintain infrastructure projects and systems in the public and private sector, including roads, buildings, airports, tunnels, dams, bridges, and systems for water supply and sewage treatment.

Alex wants to take a small road trip over the weekend, but
needs to be back before Monday. He travels 450 miles and
it takes him 9 hours. What unit of measurement should
Alex be measuring his speed with

Answers

Answer:

Miles is the distance unit. Hours is the time unit.

Explanation:

The radius of Mars is 3397 km; and its mass is 6.42x10²³ kg. What is the acceleration due to gravity at an altitude of 485 km above the surface of Mars?

Answers

Answer:nfeergnjknrtgrth

Explanation:

Answer:

F = GMm/r^2

MA = GMm/r^2

A = GM/r^2

A = (6.67 * 10^-11)(6.42 * 10^23) / (3.37 * 10^6)^2

A = 3.77 m/s^2

Explanation:

4) An object is dropped from rest. After 6 seconds, what is the velocity of the object?
Hint: Use this equation and solve for the final velocity: y = gt
5) An object is dropped from rest. After 4 seconds, how far did the object fall?
Hint: Use this equation and solve for displacement: d = 12 gť
Can you solve both for me

Answers

Answer:

for question no.4,

time =6 secs

acceleration due to gravity (g)= 9.8 m/s^2

velocity=gt

=6×9.8

=58.8m ans...

for question no .5,

time taken = 4seconds

aacceleration due to gravity (g)=9.8 m/s^2

distance=12gt

=12×9.8×4

=470.4meter answer...

1. A pendulum is 0.25 m long. What is the frequency of its oscillations?
How do you solve this

Answers

Answer:

hi

Explanation:

hi

3/50
How many joules of energy does a 100-watt light bulb use per hour? How fast would a 70-kg person have to run to have that amount of kinetic energy?
A
360000.J. 101 m/s
B
320000 J 130 m/s
C
380000 J 120. m/s
340000 J. 140 m/s​

Answers

Answer:

in the statement of account very seriously

which is the smallest particle containing the same characteristics for a compound?​

Answers

Answer:

A compound is a substance that consists of two or more elements in a unique composition. The smallest particle of a compound is called a molecule. Chemical bonds hold together the atoms of molecules

Which object has the most momentum?
A) a mass of 100, kg with a velocity of 2.0 m/sec
B) a mass of 100 kg with a velocity of 32.0 m/sec
C) a mass of 15 kg with a velocity of 200. m/ sec

Answers

C) has the most mass
A :-) a.) given - m = 100 kg
v = 2 m/s
Solution -
p = mv
p = 100 x 2
p = 200 kg m/s

b.) Given - m = 100 kg
v = 32 m/s
Solution
p = mv
p = 100 x 32
p = 3200 kg m/s

c.) Given - m = 15 kg
v = 200 m/s
Solution -
p = mv
p = 15 x 200
p = 3000 kg m/s

.:. Option c.) 3000 kg m/s object has the most momentum

Melissa my pet cow from childhood that i could ride like a horse had a weight of 0.65 tons. Philip my pet rabbit had a weight of 192 ounces. How many philips would it take to weigh as much as one melissa

Answers

Answer:

11 times the weight of Philip.

Explanation:

From the question given above, the following data were obtained:

Weight of Melissa (i.e cow) = 0.65 tons

Weight of Philip (i.e rabbit) = 192 ounces

Next, we shall express the weight of Philip (i.e the rabbit) in tons. This can be obtained as follow:

1 ounce = 3.125×10¯⁵ ton

Therefore,

192 ounce = 192 ounce × 3.125×10¯⁵ ton / 1 ounce

192 ounce = 0.06 ton

Thus, the weight of Philip (i.e the rabbit) in ton is 0.06 ton.

Next, we shall determine the ratio of the weight of Melissa (i.e the cow) to the weight of Philip (i.e the rabbit). This can be obtained as follow:

Weight of Melissa (i.e cow) = 0.65 ton

Weight of Philip (i.e rabbit) = 0.06 ton

Melissa /Philip = 0.65/0.06

Melissa /Philip = 11

Melissa = 11 × Phillip

Thus, it will take 11 times the weight of Philip to weigh as much as Melissa.

A machine gun with a mass of 5kg fires a 50g bullet at a speed of 100m/s calculate the recoil speed of the machine gun

Answers

Answer:

Explanation:

Convert mass of bullet 50g in kg

✯ Divide 50 by 1000

⟹ 50/1000

∴ 0.05 kg

Which statement describes the interaction between the permanent magnets and the electromagnet in an electric motor? A. The current in the electromagnet is reversed by the permanent magnets B. The current in the permanent magnets is reversed by the electromagnet C. The poles of the permanent magnets are reversed by the electric field of the electromagnet. D. The metal loop in the electromagnet turns because of the magnetic field of the permanent magnets​

Answers

Answer:D

Explanation:AP3X

The statement describes the interaction between the permanent magnets and the electromagnet in an electric motor is option D.

What is magnet?

A substance which is negative charged at one end and positive charged at another end creating the magnetic field around it.

A bar is a magnet which can attract the particle which are charged. It has two poles North and South.

The permanent magnet create magnetic field very strong. The electromagnet is find in the electric motor. In the motor, loop made up of conductor is rotated by the effect of magnetic field of permanent magnet.

Thus, the correct option is D.

Learn more about magnet.

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The photo shows two yeast cells. Each cell is an individual organism. Which sentence best describes what happened to each cell during cell growth?


A. It will become many different cells.

B. It will produce offspring with a mate.

C. It will divide in half to form two new cells.

D. It will become larger by taking in nutrients.

Answers

The answer is option c - It will divide in half to form two new cells..

Explanation:

The sentence that best describes what happened during cell growth is ;

( D ) It will become larger by taking in nutrients

As the yeast cells begin to grow ( i.e. cell growth ), they will require more nutrients and as they take in the necessary nutrients they will gradually increase in size ( becoming larger ) which is a vital sign of cell growth and development, which will be seen in the yeast cells as they undergo cell growth.

The production of offsprings with a mate does not describe an activity that occurs in cell growth.  

Hence we can conclude that The sentence that best describes what happened during cell growth is, It will become larger by taking in nutrients.

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why the gaps left between succesive rails on a railway tracks​

Answers

Small gaps which function as expansion joints are deliberately left between the rail ends to allow for expansion of the rails in hot weather. ... Because of these small gaps, when trains pass over jointed tracks they make a "clickety-clack" sound.


A platinan bar measure 5.0cm long, 40cm
wide and 1.5 cm thick. if has a mass of 700.0grams.

Calculate the volume of platinum bar.


I need help :( Plz help me​

Answers

Answer:

that is what I got for my answer

Explanation:

I Calculate it and I got 1600

In a lacrosse game a ball is thrown with a force of 2000 N. The throwing force acted for 0.8
seconds. If the ball had a change in velocity, Av, of 50 m/s, what is the mass of the ball?

Answers

Answer:

Mass, m = 32 kg

Explanation:

Given that,

Force, F = 2000 N

The change in velocity, (v-u) = 50 m/s

Time, t = 0.8 s

We need to find the mass of the ball. The net force acting on an object is given by :

F = ma

Where a is acceleration

[tex]F=\dfrac{m(v-u)}{t}\\\\m=\dfrac{Ft}{(v-u)}\\\\m=\dfrac{2000\times 0.8}{50}\\\\m=32\ kg[/tex]

So, the mass of the ball is 32 kg.

What distance was covered in the 1st 2 seconds?

A.0 m B. 4m

C. 2m C. 8m

Answers

Answer:

E

Explanation:

Elaphants and noodles+ramen and sushi

What does the triangle mean in physics?

Answers

Triangle is a mathematical symbol which the notes change in a quantity.

It is called Delta.

So Delta V=final velocity (-) minus initial velocity, delta T = time during the final velocity (-) during the initial velocity was recorded.

In physics, the triangle symbol (∆) typically represents a change or difference in a particular quantity.



A triangle is often used to denote the difference between two values of a variable. For example, if we have two values of time, t1 and t2, the change or difference in time can be represented as Δt = t2 - t1, where Δt is the triangle symbol indicating the change in time. Similarly, it can be used to represent differences in other physical quantities such as displacement (∆x), velocity (∆v), or temperature (∆T). The triangle symbol (∆) is a shorthand notation commonly used in physics to indicate changes or differences.

In terms of change in displacement, the triangle symbol (∆) represents the difference between two positions or locations. It indicates the change in the object's position from an initial point to a final point.

For example, if an object initially starts at position x1 and then moves to position x2, the change in displacement (∆x) can be calculated as ∆x = x2 - x1. Here, ∆x represents the difference or change in the object's displacement.

The magnitude of ∆x gives the overall distance traveled by the object, and its sign indicates the direction of the displacement. A positive ∆x signifies a displacement in the positive direction (e.g., to the right or upward), while a negative ∆x represents a displacement in the negative direction (e.g., to the left or downward).

Therefore, The triangle symbol (∆) is commonly used in physics equations to denote changes or differences in various quantities, including displacement, velocity, time, and more. It helps us analyze and quantify the differences between two values of a physical quantity.

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If a motorcyclist accelerates from rest to 40 m/s in 8 seconds, what is their acceleration?

Answers

Answer:

5 m/s²

Explanation:

Given:

v₀ = 0 m/s

v = 40 m/s

t = 8 s

Find: a

a = (v − v₀) / t

a = (40 m/s − 0 m/s) / 8 s

a = 5 m/s²

WHOEVER RESPONDS TO THIS FIRST WILL GET BRAINIEST!!!!!!
What is the velocity of a car going 4miles in 30 seconds, with the displacement of 36?

Answers

Answer:

alright i responded

Explanation:

you didnt say i had to answer

Yes I responded to the answer is 47
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