Date
Class
Name
Chapter 4 Directed Reading
Overview
Work and
Energy
Directions: Complete the concept map using the terms in the list below.
distance
mechanical energy potential energy
machines
motion
work
force
object
multiply
motion
9
tim
equa
Is
can be
made
RARIAr with
th
at
6
fore
0.
tropafer
00-00
00 0
O
Energ
duo
to
stored in
position
and
Copyright Glencow a division of The McGraw-Hill Companie te
motion
kinetic
energy
Work and Energy 15

Answer:

the answer is b : Rutherford’s results supported parts of Thomson's model, but also provided new data and interpretations.

Explanation:

i read that and read the answers this is only logical one

Answer:

Explanation:

To understand this, we need to reflect back to the law of motion, the first law to be précised.

It states that "A body will continue to be at rest or uniform/constant motion unless acted upon by an external force which is greater than the current force"  

So we can see that since the person continues to apply the same force at the same speed, the effect on the mover will be the same.

Answer:

-4m/s²

Explanation:

Given parameters:

Initial velocity  = 9m/s

Final velocity  = 1m/s

Time taken  = 2s

Unknown:

Acceleration  = ?

Solution:

The acceleration of a body is the change in velocity of a body with time.

    Acceleration  = [tex]\frac{Final velocity - Initial velocity }{time}[/tex]

Insert the parameters and solve;

    Acceleration  = [tex]\frac{1 - 9}{2}[/tex]  = -4m/s²

We can say, the car is decelerating at a rate of 4m/s²

Answer:

Erosion is the geological process in which earthen materials are worn away and transported by natural forces such as wind or water.

Explanation:

Destructive waves erode through four main processes; Hydraulic Action, Compression, Abrasion and Attrition.

Answer:

Below! ;)

Explanation:

Lots of people have the idea that erosion is where something is eroded away, and EVEN I thought that once, but erosion is the process in which parts of land are moved to a different province. Erosion can sometimes also bring in invacious species.

Hope this helps!

Have a nice day!

If you find my answer helpful

Pls consider marking my answer as Brainliest! It would mean a lot!

Answer:

solar energy, wind energy, geothermal energy, hydropower, and Bioenergy

Answer:solar energy, wind energy, geothermal energy, hydropower, and Bioenergy

Explanation:let me know if that helped

Answer:

If the net force is doubled the acceleration change in the same proportion, that is to say, it is doubled too.

Explanation:

We have that:

[tex] F = ma [/tex]

From the equation above we see that the acceleration is directly proportional to the force, so hence if the force is doubled:

[tex] F_{1} = ma_{1} [/tex]

[tex] 2F_{1} = ma_{2}  \rightarrow a_{2} = 2\frac{F_{1}}{m} = 2a_{1} [/tex]  

Therefore, If the net force is doubled the acceleration change in the same proportion, that is to say, it is doubled too.

I hope it helps you!

Explanation:

To convert from °C to K, we use the expression below;

           tK = t°C + 273

tK = temperature in Kelvin

t°C = temperature in celcius

A.  50°C;

        tK = 50 + 273  = 323K

B. 10°C;

      tK = 10 + 273 = 283K

C. 17°C;

     tK  = 17 + 273 = 290K

D, -40°C

    tK = -40 + 273  = 233K

Answer:

206 meters East

Explanation:

Assuming that the starting point of Lebron James 0. He ran from point 0 to 260 meters in the Eastern direction. His displacement is now 260 meters to the East.

He then turned from the Eastern to the Western direction - opposing directions - and then walked 54 meters to find his ball. His displacement from the starting point will now be:

260 - 54 = 206 meters in the Eastern direction.

Answer:

It would take 5

18.3

Explanation:

It depends on how fast it comes and the timing

Explanation:

Power is change in energy over time.

P = (50 J) / (5 s)

P = 10 W

Answer: C

Explanation:

For this problem, we must divide.

50 ÷ 5 = 10

The answer to the question is 10

Answer:

46.2m/s²

Explanation:

Given parameters:

Acceleration  = 18.2m/s²

Original force  = F

Decrease factor = 3.9

Unknown:

New acceleration = ?

Solution:

Let the original force  = F

            new force  = [tex]\frac{F}{0.39}[/tex]

        Original acceleration = 18.2m/s²

         new acceleration  = ?

According to newton's second law of motion;

       Force = mass x acceleration

  So,

        mass = [tex]\frac{Force}{Acceleration}[/tex]

   So; initial mass = final mass

                [tex]\frac{F }{18.2}[/tex]  = [tex]\frac{\frac{F}{0.39} }{acceleration}[/tex]

             [tex]\frac{F}{0.39}[/tex] x 18.2 = F x acceleration

            Acceleration = 46.2m/s²

Answer:

Friction drag force causes objects to slow down as they move through a fluid, such as air or water. ... As an object's speed increases, the drag force from the fluid increases exponentially.

Answer:

Friction slows down an object using its rough surface

Explanation:

Friction is the force between objects. friction moves in the opposite direction which slows it down, it is very helpful when you want to stop a moving object

Answer:

37.25m/s

Explanation:

Acceleration is the change in velocity of an object with respect to time.

Acceleration = velocity/time

Given

Velocity = 250mi/hr

Convert to m/s

1mile = 1609.344m

1hr = 3600s

250mi/hr = 250mi * 1609.344/1 * 3600

250mi/hr = 402366/3600

250mi/hr = 111.76m/s

Time = 3 seconds

Get the acceleration:

Acceleration = 111.76/3

Acceleration = 37.25m/s

Hence the acceleration is 37.25m/s

Answer:

t = 150 [s]

Explanation:

To solve this problem we must take into account that the car travels at a constant speed, that is, there is no acceleration or it is equal to zero, therefore we can use the following equation of kinematics.

X = Xo + (v*t)

where:

x = final point [m]

Xo = initial point [m]

v = constant velocity = 20 [m/s]

t = time [s]

X - Xo = the distance traveled = 3000 [m]

3000 = 20*t

t = 150 [s]

Answer:

it's gravitational potential energy would have converted to kinetic energy half way back when it's falls

Which receives the most solar radiation?

A the polar zones

B the oceans

C the tempetra zones

D the equator ✅

Answer:

+27.29

Explanation:

To solve this problem we must use the following equation of kinematics.

[tex]v_{f}^{2} =v_{o}^{2}+2*g*x[/tex]

where:

Vf = final velocity [m/s]

Vo = initial velocity = 0 ( the ball is dropped)

g = gravity acceleration = 9.81 [m/s²]

x = distance = 38 [m]

Vf² = 0 + (2*9.81*38)

[tex]v_{f}=\sqrt{2*9.81*38} \\ v_{f} = 27.3 [m/s][/tex]

Answer:

the answer of this question is B

The reason why the feather does not accelerate at this rate when dropped near the surface of Earth is because of Air friction acts on the feather.

The Gravity or its acceleration due to it is regarded as 9.81 meters per second square, on the earth surface, because of the size of Earth and the distance we are on its surface from its center.

In space, gravity are said to be constant.

Conclusively, due to air resistance, acceleration throughout a fall gets less than gravity because it affects the movement of the falling object by slowing it down.

Learn more from

https://brainly.com/question/12167131

Answer:

along the upper right side

Explanation:

cause metals are on upper left side

Answer:

D 71.75

Explanation:

divide 2,009 miles by 28 hours

Answer: this might be wrong but my answer is A.

Explanation: it said "Running through the pattern are four smear lines about 0.5 - 1 cm apart and perpendicular to the bottom of the wall." and "perpendicular" is like not that big and not that small and A is "and his hand slid down along the wall as he collapsed." so I think it is A.

Answer:

D. 3 Ohms

Explanation:

Answer:

C. it will increase in speed

Explanation:

brainliest please? :))

Answer:

Radio waves.

Explanation:

Radio waves are at the far left of the EMS with a low frequency. Higher frequencies, such as Gama rays, cause more harm than the lower frequencies

Answer:

Molecule

Explanation:

A molecule is the smallest particle of sugar (glucose - C6H12O6) or any other substance because a molecule possess all properties of that particular substance.

Molecules are responsible for all the chemical and physical properties of a substance, so molecules decided the properties of sugar as well. If the molecule will be broken, it will lose its properties. Sugar is composed of molecules that include 6 atoms of carbon, 12 atoms of hydrogen, and 6 atoms of oxygen.

Hence, the correct answer is "Molecule".

Answer: B, remains constant.

Given that,

Initial speed of a cat is 0 because it was at rest.

If it takes 1.2 s for the flowerpot to fall from the window, we need to find the height reached by the cat.

Using second equation of motion to find it as follows :

[tex]d=ut+\dfrac{1}{2}at^2[/tex]

Put u = 0 and a = g

[tex]d=\dfrac{1}{2}gt^2\\\\d=\dfrac{1}{2}\times 9.8\times (1.2)^2\\\\d=7.05\ m[/tex]

So, it will move to a height of 7.05 m.

Answer: 10 meters

Explanation:

Divide 200 by 20, for 20 seconds.

200 ÷ 20 = 10

The answer to the question is 10.

Answer:

P.E = 2934.75

Explanation:

Potential energy can be defined as an energy possessed by an object or body due to its position.

Mathematically, potential energy is given by the formula;

[tex] P.E = mgh[/tex]

Where, P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

Given the following data;

Weight =645

Height = 4.55

[tex] P.E = mgh[/tex]

But we know that weight = mg = 645N

Substituting into the equation, we have;

[tex] P.E = 645 * 4.55 [/tex]

[tex] P.E = 2934.75 J[/tex]

Potential energy, P.E = 2934.75 Joules.