When is the acceleration of a body is positive, negative and zero?​

Answers

Answer 1

Answer:

it is 0 lol

Explanation:


Related Questions

Chauncy is driving down the hill that descends at an angle a 4.5° below horizontal. After driving 4.60 kilometers along the road, how much elevation has chauncy lost?

Answers

Answer:

360 m

Explanation:

Explanation is given in the attached image below.

A shopper walks westward 5.4 meters and then eastward 7.8 meters

Answers

Answer:

13.2 meters

Explanation:

(5.4) + (7.8)

Which force is making a difference in the weight of each person?


A

applied

B

gravitational

C

normal

D

tension

Answers

The force is different because of the amount of weight applied so the answer is A

The force that makes a difference in the weight of each person is Gravitational. Correct option is B.

Gravitational force is a fundamental force of nature that exists between any two objects with mass. It's the force that keeps us and everything else on Earth anchored to its surface. This force is proportional to the mass of the objects involved and inversely proportional to the square of the distance between them.

For example, if you were standing on a bathroom scale, the reading on the scale represents the force of the Earth's gravity acting on your body, which is why it's often referred to as your "weight." The actual mass of an object remains constant regardless of its location, but its weight can vary depending on the strength of the gravitational field at different locations (e.g., the weight on the Moon would be less than on Earth due to the Moon's weaker gravitational pull).

To know more about Gravitational:
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it is safe to smoke smarties

Answers

Answer:

no it is not safe to smoke

Answer:

well its not affecting you lungs or anything. the only way it will affect you is if you eat to much smarties or you choke on it. so yeah it is safe to smoke smarties

Explanation:

Which has more kinetic
energy, a bowling ball or
a baseball rolling on a
table at the same speed?
Why?

Answers

Answer: a bowling ball

Explanation: a baseball doesn’t need as much kinetic energy because it’s smaller

If a bowling ball is rolling at the same speed as a small baseball then since the bowling ball is bigger it has more kinetic energy

Answer: A Bowling Ball

Explanation: A baseball doesn’t require much kinetic energy because it is smaller than a bowling ball and much lighter.

what happens to kinetic energy as speed doubles and mass doubles

Answers

Answer:

If you double the mass of an object, you double the kinetic energy. If you double the speed of an object, the kinetic energy increases by four times. Kinetic energy can be passed from one object to another in the form of a collision....What happen to the kinetic energy of its velocity become double ? The energy possessed by a body because of its motion, equal to one half the mass of the body times the square of its speed is called its kinetic energy. Hence, when velocity is doubled, kinetic energy becomes 4 times.

Explanation:

Answer: It increases by four times

Explanation: If you double the mass of an object, you double the kinetic energy. If you double the speed of an object, the kinetic energy increases by four times. Kinetic energy can be passed from one object to another in the form of a collision.

Which statement explains whether or not a person should use an experiment of a ball rolling down a hill as evidence that the force of gravity pulls objects straight down?(1 point) They should use it. Any experiment on Earth involving natural motion will provide direct evidence that gravity pulls objects straight down. They should use it. Any experiment on Earth involving natural motion will provide direct evidence that gravity pulls objects straight down. They should not use it. The experiment has several dimensions of motion, including one parallel to the ground, so the motion of the ball does not directly test the force of gravity. They should not use it. The experiment has several dimensions of motion, including one parallel to the ground, so the motion of the ball does not directly test the force of gravity. They should use it. The experiment shows the ball falls toward the bottom of the hill, so it provides direct evidence that gravity pulls an object downward. They should use it. The experiment shows the ball falls toward the bottom of the hill, so it provides direct evidence that gravity pulls an object downward. They should not use it. Gravity should be tested in space, and this experiment could only be tested on Earth.

Answers

The ball raised up the hill is given gravitational potential energy, which

causes it to roll spontaneously down the hill.

The statement that explains whether the ball rolling down the hill

experiment should be used is; The experiment shows the ball falls toward

the bottom of the hill, so it provides direct evidence that gravity pulls an

object downward. They should use it.

Reason:

The equation for the velocity of a ball falling down a hill is [tex]v = \sqrt{\dfrac{10}{7} \cdot g \cdot h}[/tex]

Therefore, by increasing the height from which the ball rolls down the hill,

the velocity of the ball increases, which indicates that the ball is

accelerating, and therefore, being acted on by a force, the force of gravity.

Therefore;

Given that the ball falls or moves with increasing speed towards

the bottom of the hill, which shows that the motion is due to Earth's pull

known as the gravitational force, the experiment should be used.

Learn more here:

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Ok, so the runner then goes from 20m to 11m. Distance? Displacement?

Answers

Answer:

honestly a bit confused by the question, but this would be a 9 meter difference in the distance, moving from 20m to 11m

Explanation:

Friction can be reduced by using ___________.

Answers

Answer:

Make the surfaces little more smoother. ...

Lubrication is another way to make a surface smoother. ...

Make the object more streamlined. ...

Reduce the Normal force acting between the surfaces in contact. ...

Reduce the contact between the surfaces, so that less number of bonds will be formed.

if v= 4.3 + 1.2% and I = 2.1A + 4.5% find the resistance and significant figures

Answers

This equals to a v=78.9(*5%)

Two point charges are separated by 6.4 cm . The attractive force between them is 10 N . Suppose that the charges attracting each other have equal magnitude. Rearrange Coulomb's law and find the magnitude of each charge. Express your answer to two significant figures and include the appropriate units.

Answers

Answer:

Two point charges are separated by 6.4 cm . The attractive force between them is 10 N .

units.

Explanation:

Henry is at the state fair. At one booth he throws a 0.70 kg ball forward with a velocity of 22.0 m/s in order to hit a 0.15 kg bottle sitting on a shelf. When the ball makes contact the bottle goes flying forward at 29.0 m/s. What is the velocity of the ball after it hits the bottle?

Answers

The velocity of the ball after it hits the bottle is 15.8 m/s

Let m₁ represent the mass of the ball, m₂ the mass of the bottle, u₁ the velocity of ball before impact, u₂ the velocity of bottle before impact, v₁ the velocity of ball after impact and v₂ the velocity of bottle after impact.

Given that:

m₁ = 0.7 kg, m₂ = 0.15 kg, u₁ = 22 m/s, u₂ = 0, v₂ = 29

momentum before impact = momentum after impact, hence:

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

0.7(22) + 0.15(0) = 0.7v₁ + 0.15(29)

0.7v₁ = 11.05

v₁ = 15.8 m/s

Therefore the velocity of the ball after it hits the bottle is 15.8 m/s

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Describe the relationship between the state of matter of water (gas, liquid, solid) and the motion of the water molecules.

Answers

Answer:

ok

Explanation:

solid- molecules are close together and vibrating

liquid - molecules are loser, faster moving and take the shape of its container

gas- fast moving molecules and take whatever shape they want (like a room or the air outside)

Explanation:

Solids: The inter-molecular attraction force is the highest and the inter-molecular distance is the least. Solids have definite shape and volume.

Liquids: The inter-molecular attraction force is less than that of solids and the inter-molecular distance is more than solids. Liquids have definite volume but no definite shape.

Gases: The inter-molecular attraction force is the least and the inter-molecular distance is the highest. Gases have no definite shape or volume.

Why can we predict the phases of the moon?

please dont search it up

Answers

Answer:

Every year, the moon moves about an inch away

A 755 N force is used to push a 15 Kg box across the floor. What is the acceleration of the box?

Answers

Answer:

a = 151/3 m/s²

General Formulas and Concepts:

Forces

Newton's 2nd Law of Motion: F = ma

F is force (in N)m is mass (in kg)a is acceleration (in m/s²)

Explanation:

Step 1: Define

Identify variables

F = 755 N

m = 15 kg

Step 2: Solve for a

Substitute in variables [Newton's 2nd Law of Motion]:                                 755 N = (15 kg)aIsolate a:                                                                                                            a = 151/3 m/s²

Topic: AP Physics 1 - Algebra Based

Unit: Forces

Exercise will not help maintain the health of your endocrine system.
A.
True

B.
False

Answers

A. True

Hope this helps :)

which nuclear decay emission consists of energy only?

Answers

Gamma radiation, it’s a decay emission of pure energy :)

Answer:

Gamma radiation

Explanation:

Gamma radiation is a decay emission of pure energy.

Please help me to solve this question .​

Answers

Answer:

P1 = momentum before collision = .5 kg * .32 m/s = .16 kg-m/s

Momentum is conserved

P1 = P2 = V * (M + m) = .16 kg-m/sec

V = .16 kg-m/sec / (.5 kg + .3 kg) = .2 m/sec

Which of the objects have only potential energy?

Answers

Answer:

its all of the above.

Explanation:they all have potential energy but they get it in different ways.

How long would it take you to travel 163 meters at a speed of 33 meters per second?

Answers

Speed=

[tex]33m {s}^{ -1} [/tex]

Distance=

[tex]163m[/tex]

speed= distance/time

So,

Time= distance/speed

Time= 163/33

=

[tex]\huge\underline\mathtt\colorbox{cyan}{4.9393s}[/tex]

what is the angular speed of the tip of the minute hand on a clock, in rad/s?

Answers

Answer:

0.10472 radians/minute

Explanation:

It completes a full rotation around that circular clock in 60 minutes. So the angular speed of the minute hand is 2 * pi / 60 = pi / 30 = 0.10472- radians/minute .

The angular speed is the ratio of angular displacement to time. Then the angular speed is π/1800 radians per second.

What is angular speed?

The rate of change of angular displacement is called angular speed.

We know that the angular speed formula

[tex]\rm Angular \ speed = \dfrac{Angular \ displacement }{time}[/tex]

The angular speed of the tip of the minute hand on a clock, in rad/s, will be given as

We know that in one hour it rotates 360 degrees or 2π. And in one hour we have 3600 seconds. Then the angular speed will be

[tex]\rm Angular \ speed = \dfrac{2\pi}{3600}\\\\\\Angular \ speed = \dfrac{\pi}{1800}[/tex]

More about the angular speed link is given below.

https://brainly.com/question/7359669

what is the physical property of a star used to classify the stars by spectral type?

Answers

Answer:

Stellar Spectra Classification The patterns of lines detected in stellar spectra are used by astronomers to classify stars into spectral classes. These spectral classes are a measure of a star's surface temperature since the temperature of a star dictates which absorption lines are present in its spectrum.

Explanation:

please help me answer this

Answers

Answer:

Earth's atmosphere is made up of a combination of gases. The major components of nitrogen, oxygen, and argon remain constant over time and space, while trace components like CO 2 and water vapor vary considerably over both space and time.

Explanation:

it is C

Answer:

c

Explanation:   O n O

The walls of a dam are much thicker at the base than at the top​

Answers

Answer:

I guess it is the reason

Explanation:

A dam is thicker at the bottom than at the top because the forces exerted are strongest close to the ground. Water pressure increases proportionally with depth, so the lower portion of the dam has greater water pressure exerted upon it. The increasing thickness of the lower dam also helps it support its own weight.

This is because of Pressure.

Pressure is directly proportional to depth and the deeper the length the high the pressure. Thus at the bottom, water pressure is very high and the walls must be made thicker to accommodate that pressure.

what is the acceleration of an object if the force equals 300 N and the mass is 25kg?

Answers

Answer:

Explanation: If a net force of 50 N pulls on a 10 kg object, how much acceleration will it cause? Then an answer is possible. Equation: Net force = mass * acceleration.

knjdjdedjddjdddejjjjjjjj

Answers

U hi why exactly are you trying to do

10. A flower pot falls off the balcony 10 m above the street. How long does it take to hit the
ground?

Answers

it will take 4.2s for the flower pot to hit the ground!

Identify some sports or activities you can do to improve your overall health and explain how physical activity can improve your

Answers

Answer:

(Your question isn't finished so here is the full question: Identify some sports or activities you can do to improve your overall health and explain how physical activity can improve your physical and emotional health.)

Answer:

Some sports or activities I can do to improve my overall health are running, jump squats, weightlifting, dancing, yoga and helping out my father in the backyard. Physical activity can improve my physical and emotional health are by strengthening bones/building muscles, control overweight and obesity, reducing stress, and improve my mood.

Explanation:

Hope this helps :)

the motion of the book as you lift it from the table and place it on the shelf

Answers

Answer:

what are you trying to do for this question

Explanation:

the emission of electrons from metals that have absorbed photons is called the

Answers

Answer:

The answer to your question is the Photoelectric effect.

Explanation:

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