Physics High School

The graph show a distance travelled by four cars (A, B, C& D) over a period of time . Which car travelled at a greatest speed? *

The Graph Show A Distance Travelled By Four Cars (A, B, C& D) Over A Period Of Time . Which Car Travelled

Answers

Answer 1

Answer:

Car A traveled with the greatest speed.

Explanation:

We know that the steepness of the slope of the line on the distance-time graph represents speed.

Important Tip:

If the slope of the line is more vertical — steep — the speed will be fast.If the slope of the line is more horizontal — flatter — the speed will be slow.

For example, at t = 5 seconds, the A car has covered more than 80 meters while all the other cars have covered less than 80 meters during the same period.

IIn fact, during the entire journey, it is clear that from the graph that the slope of the line of A car is more vertical — steep — than the slopes of cars B, C, and D.

Therefore, car A traveled with the greatest speed.

Related Questions

How do two ions of the same element differ?​

Answers

Answer:

In the electrons

Explanation:

The charge of ions of an element is determined by the amount of negative charged electrons are present. The protons and neutrons in the nucleus do not change.

Answer:

it is possible to use two icons in css content one below content 10px;color #99999

You volunteer to travel to a newly discovered planet about 30 light years from earth. At what speed do you need to travel to reach the planet in 6 years?​

Answers

6 light years speed
6 light years speed I hope that’s right :)

estion 3
What is the velocity of a 1120 kg car that has the momentum of 53,760 kg*m/s?
mentum

Answers

Answer:

Velocity = 48 m/s

Explanation:

Given:

Mass = 1,120 kg

Momentum = 53,760 kg(m/s)

Find:

Velocity

Computation:

Velocity = Momentum / Mass

Velocity = 53,760 / 1,120

Velocity = 48 m/s

Being overweight or obese increases the risk of:
A. Diabetes
B. Heart disease
C. Stroke
D. All of the above.

Answers

theanswer is b.heart disease


On which factor does the inertia of a body depend? ​

Answers

Answer:

The moment of inertia depends on the following factors, The density of the material. Shape and size of the body. Axis of rotation (distribution of mass relative to the axis)

please help this is so hard and frustrating i will name brainliest

Answers

Answer:

1.308104*10^-8 N (1.31*10^-8 N when rounded)

Explanation:

The mathematical formula for gravitational force is  F = G Mm /r^2  where  G  is the gravitational constant which is measured 6.674 *10^ − 11 N (m/kg) ^2.

Since both objects, M and m, have masses of 70kg and the distance r is 5 meters, then we can plug these values into the formula:

F=GMm/r^2

F=(6.674*10^-11)(70)(70)/(5^2)

F=(6.674*10^-11)(4900)/25

F=(3.27026*10^-7)/25

F=1.308104*10^-8

So the gravitational force of attraction between the two objects is 1.308104*10^-8 N.

Two ropes are identical. A wave traveling through the first rope has a frequency of 1.5 hertz and a wavelength of 6 meters. What is the frequency of a wave in the second rope if its wavelength is 2 meters?(1 point)

3 hertz

4.5 hertz

9 hertz

1.5 hertz

Answers

the answer is b 4.5 hertz

5. What is crystallisation ? Describe the crystallisation of copper sulphate.​

Answers

it is a process in which the structure in solution is in the form of crystal. crystallization of copper sulphate refers to the process in which copper sulphate is heated at minimum temperature.

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Electric fields are often associated with what other kind of field?
a. Magnetic Fields

b. Particle Fields

c. Nuclear Fields

d. Corn Fields


NEED HELP VERY FAST

Answers

Answer:

The answer is A :)

Explanation:

(I'm good at this kind of stuff but sometimes I get things wrong. We all do)

I believe your answer is A though

Feel free to correct me if i'm wrong :)

Why is the sky blue?
Why does the moon appear in the daytime?
How much does the sky weigh?
How do airplanes stay in the air?
Why is water wet?
Why don't birds get electrocuted when they land on an electric wire?​

Answers

Answer:

the sky is blue because of reflection of blue light of sea and ocean.

the moon appear in the daytime because light of sun is brighter than of moon

airplanes stay in the air by maintaining balance in air and gravity.

birds did not get electrocuted when they land on an electric wire because there body is non conductor.

Which of the following is an advantage of circuit breakers over fuses.

A.) It is easier to trip a fuse.

B.) Circuits get hot.

C.) Tripped circuit breakers do not need to be replaced.

D.) Fuses need to be replaced

Answers

I’m sure the answer is C

One of the advantage of circuit breaker over fuses is tripped circuit breakers do not need to be replaced as fuse does power is in rapid restoration  with breakers.

What are circuit breakers?

A circuit breaker is an electrical device similar to electrical switches designed to protect the circuit from damges created by over current or short circuit.

Circuit breakers can be operated manually or automatically  for saving the electrical network and components.  Fuse is another saftey device to provide protection from overcurrent. It is operating automatically and it melts when over current is passed.

Even though fuses can be easily operated and less expensive, power cannot be restored after tripping the fuse whereas,  tripped circuit breakers need not be replaced and easily restore the energy as soon.

To find more on fuses, refer here:

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Chemical changes occur as energy is transferred when molecules- - or - to form one or more new substances

Answers

Answer:

Correct options are C. As food is digested, molecule bonds are broken, allowing new molecules to form that can be used by our bodies.

D. Energy stored in organic fuels are used for heat and electricity/ When batteries are connected to a circuit, a reaction occurs inside the cell producing electrical energy.

Explanation:

The breakdown of food leads to the release of chemical energy which was first stored in food. This energy is used to drive necessary functions of the body. A series of chemical reactions are involved in the breakdown of food and changing them into useful components for the cell.

Chemical energy is stored in circuits. When the battery is connected to a circuit, the chemical energy gets transferred into electrical energy.

Answer:

change, combine

Anita rides a bicycle to market 60km from her house in 3.5 hours. What is Anita’s

speed?​

Answers

Antias speed is about 17.142 km per hour.
60 divided by 3.5. The km divided by the hour gives the km per hour. Hope that helped :)

Could someone pls help at #9?

Answers

Answer:

Substance 3 is the answer

A skier, starting from rest, slides down an icy frictionless 80o incline whose vertical height is 105 m. How fast are they going when the reach the bottom?

Answers

Answer:

nadaáaaaaaaaaaaaaa aaaaaaaaaaaaaaa

What is the evidence that an asteroid collision has happened before?

Answers

Answer:

The first clue that an asteroid had struck earth at around the same time as the mass extinction was the amount of iridium around the K-T boundary. Another clue was that they found that most animals that lived in the cretaceous died when the asteroid crashed and they found bones of animals from the cretaceous.

A bungee jumper is attached to a bungee cord, which acts like a spring. When the bungee jumper jumps, he oscillates in periodic motion. If losses due to friction and air resistance can be ignored, what types of energy conversions are involved in this system? A. Energy is converted between gravitational potential and elastic potential energy B. Energy is converted between kinetic and gravitational potential energy C. Energy is converted between gravitational potential, elastic potential, and kinetic energy, D. Energy is converted between kinetic and elastic potential energy.

help please!!!​

Answers

B. Energy is converted between kinetic and gravitational potential energy

WILL MARK BRAINLIEST
When an arrow hits its target, what type of energy will it have?
A. gravitational
B. elastic
C. mechanical
D. chemical

Answers

Answer

Mehanical energy

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I am not very much sure but I will give a small explanation here

A bow and arrow possesses mechanical energy. When the arrow is drawn it has potential energy and when it is released it produces a force to propel the arrow towards the aimed target, therefore giving the arrow kinetic energy. When you combine both energies it creates mechanical energy

What name is given to the process that occurs when light passes from air to water?
A radiation
B reaction
C reflection
D refraction

Answers

Answer:

Refraction

Explanation:

What is the power generated by a 3.7 V cell phone battery that provides 2.0 A of current?

Answers

Answer:

7.4 watt

Explanation:

Power= V× I

= 3.7×2.0= 7.40 watt

Which three characteristics describe the energy of a wave? (2 points)

a
Frequency, the crest, and the trough

b
Wavelength, amplitude, and frequency

c
Speed, amplitude, and medium

d
Frequency, wavelength, and medium

Answers

Answer is B! Hope you have a good day

A object covers 900 km in 10 hours, calculate the speed of the object in km/h and m/s

Answers

Answer:

Speed = 90km/h

Speed= 150m/s

Answer:

speed is the distance divided by the time

so 900/10= 90km/h

to convert into meters per second

divide by 3.6

90/3.6=25m/s

Explanation:

Leigh Ann is learning about the differences between inherited traits and learned behaviors in organisms. For example, she knows that being able to read is learned while having straight or curly hair is inherited. How does a person inherit a trait such as hair texture?

A. Through the storage of extra fat during birth

B. Through DNA that is passed from parents to offspring

C. Through the breakdown of different proteins during birth

D. Through different viruses that are passed from parents to offspring

Answers

It’s letter B! Through DNA that is passed from parents to offspring!! I had the Sam worksheet lol

Answer:it the letter b I was just finished with this test

Explanation:

Which compound most likely has atoms held together by covalent bonds?
A. Lithium fluoride, LiF
B. Methane, CHA
C. Sodium chloride, NaCl
D. Magnesium chloride, MgCl2​

Answers

Answer:

Meth CH4

Explanation:

Breaking bad

Answer:

B, Methane CH4

Explanation:

4p3x !

What is the relationship between Pressure and phg

? ?.​

Answers

Answer:

P=F/A =mg/A =pvg/A = pgh

Explanation:

pressure equals force per unit area.

force also equals mass ×gravity

mass can also be density ×volume

volume can also be area × height

area would cancel out the area

leaving pgh

Give reason.
1. Graph paper is used to measure the area of an irregular object.​

Answers

graph paper can be effectively used to measure the area of irregular objects...... because the graph consists of small units of 1 into 1 cm.. if an irregular object is kept And drawn over the graph then you can consider those 1 into 1 unit boxes for calculating the surface area. moreover find the thickness of the object then we can find the volume too

Why does it take a long time for the earth to rotate?

Answers

24hrs or i full year as in 365 days

Answer:

earth takes a long time to rotate due to the tidal effects the moon has on earth's rotation

Explanation:

I hope this helps!

The diagram below shows a wave. The feature of the wave are labeled A, B, C, and D. Which label identifies the wavelength?​

Answers

The answer would be c

According to the given diagram, the c identifies the wavelength of the curve. Hence, option C is correct.

What is wavelength?

In order to characterize waveform signals that are transmitted across wires or into space, the term "wavelength" is used to refer to the separation between two identical positions (adjacent crests) in succeeding cycles. Typically, this length in wireless systems is measured in meters (m), centimeters (cm), or millimeters (mm) (mm). When describing the wavelength of infrared (IR), visible light (UV), and gamma radiation, units of 10-9 nanometers (nm) or angstroms (10-10 m) are more usually used.

The relationship between frequency and wavelength is inverse, with frequency being the number of wave cycles per second. A signal's wavelength shortens as its frequency rises, or we may say that the relationship between wavelength and refractive index is inverse.

To get more information about wavelength :

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How do we know when an object is in static or dynamic equilibrium?

Answers

Answer:

First Condition of Equilibrium

Explanation:

This means that both the net force and the net torque on the object must be zero. The condition Fnet=0 F net = 0 must be true for both static equilibrium, where the object's velocity is zero, and dynamic equilibrium, where the object is moving at a constant velocity.The sum of the forces on it in each direction is zero. The sum of the torques on it in each direction is zero. Its linear momentum is zero.

Which one of these exercises gets your heart pumping? *
O Sitting in a chair
O Sleeping
O Swimming
O None of the Above

Answers

Answer:

swimming

Explanation:

Swimming







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