How much force does a soccer goalie
experience when stopping a ball with the
mass of 0.2 kg that accelerates at the rate
of 10 meters per second^2?

Answer:

Scientific Definition of Mass. Mass is the quantity of inertia (resistance to acceleration) possessed by an object or the proportion between force and acceleration referred to in Newton's Second Law of Motion (force equals mass times acceleration). In other words, the more mass an object has, the more force it takes to get it moving.

Explanation:

Answer: In statistics, a perfect positive correlation is represented by the ... variables in question move together by the exact same percentage ... Positive correlation is a relationship between two variables in which both variables move in ... other variable decreases, or one variable increases while the other increases.

Explanation:

make me a brainlist and like and rate

Percent error is a mathematical way of showing accuracy, dependent variable is what is measured and affected during the experiment, independent variable is what is changed by the researcher.

Percent error is the difference between the estimated value and the actual value in comparison to the actual value of the experiment and is expressed as a percentage value. In other words, the percent error is the relative error multiplied by the number 100.

Direct relationship is a relationship between any two variables whereby both the variables increase or decrease together. Directly affect each other.

Inverse relationship is a relationship between any two variables whereby one variable increases and the other variable decreases. The variables affect each other but inversely.

An independent variable is the variable which is changed by the researcher through the experiment.

A dependent variable is the variable which is measured and affected during the experiment and it often described as being dependent on the independent variable of the experiment.

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Answer:

(a) She has traveled a total distance of 28958.04 m during the entire trip.

(b) Her average velocity for the trip is 6.12 m/s

Explanation:

Here is the complete question:

A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 26.8 minutes at an average speed of 7.57 m/s. During the second part, she rides for 42.4 minutes at an average speed of 3.17 m/s. Finally, during the third part, she rides for 9.69 minutes at an average speed of 15.0 m/s. (a) How far has the bicyclist traveled during the entire trip?  (b) What is her average velocity for the trip?

Explanation:

(a) To determine how far the bicyclist has traveled during the entire trip, we will calculate the distance she covered in each part of the trip, and then sum up the distances to determine the total distance covered.

During the first part, she rides for 26.8 minutes at an average speed of 7.57 m/s

That is,

Average speed, [tex]v[/tex] = 7.57 m/s

and time, [tex]t[/tex] = 26.8 minutes

Convert the time to seconds

∴ [tex]t[/tex] = 26.8 minutes = (26.8 × 60) secs = 1608 secs

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

Then, [tex]Distance = Average speed[/tex] × [tex]Time[/tex]

Hence, for the first part

[tex]Distance = 7.57[/tex] × [tex]1608[/tex]

[tex]Distance = 12172.56[/tex] m

This is the distance covered in the first part of the trip.

During the second part, she rides for 42.4 minutes at an average speed of 3.17 m/s

That is, Average speed, [tex]v[/tex] = 3.17 m/s

and time, [tex]t[/tex] = 42.4 minutes

Convert the time to seconds

∴ [tex]t[/tex] = 42.4 minutes = (42.4 × 60) secs = 2544 secs

From,

[tex]Distance = Average speed[/tex] × [tex]Time[/tex]

[tex]Distance = 3.17[/tex] × [tex]2544[/tex]

[tex]Distance = 8064.48[/tex] m

This is the distance covered in the second part of the trip.

During the third part, she rides for 9.69 minutes at an average speed of 15.0 m/s

That is, Average speed, [tex]v[/tex] = 15.0 m/s

and time, [tex]t[/tex] = 9.69 minutes

Convert the time to seconds

∴ [tex]t[/tex] = 9.69 minutes = (9.69 × 60) secs = 581.4 secs

From,

[tex]Distance = Average speed[/tex] × [tex]Time[/tex]

[tex]Distance = 15.0[/tex] × [tex]581.4[/tex]

[tex]Distance = 8721[/tex] m

This is the distance covered in the third part of the trip.

Now for the distance covered during the entire trip,

Total distance = distance covered in the first part of the trip + distance covered in the second part of the trip + distance covered in the third part of the trip

Hence,

Total distance = 12172 m + 8064.48 m + 8721 m

Total distance = 28958.04 m

Hence, she has traveled a total distance of 28958.04 m during the entire trip.

(b) For her average velocity for the trip

Average velocity is given by

[tex]Average velocity = \frac{Total distance traveled}{Total time}[/tex]

Total distance traveled = 28958.04 m

Total time = 1608 secs + 2544 secs + 581.4 secs

Total time = 4733.4 secs

Hence,

[tex]Average velocity = \frac{28958.04}{4733.4}[/tex]

Average velocity = 6.1178 m/s

Average velocity ≅ 6.12 m/s

Answer:

Explanation:

In this problem we are expected to find the weight of the plastic tank and the weight of the equal volume of water

Given that

density of water = 1000 kg/m^3

volume of plastic tank is same as the volume of water= 0.18 m^3

we need to solve for the mass of the water

we know that density is = mass/volume

1000= mass/0.18

mass= 1000*0.18

mass= 180 kg

the total mass of the combined system is

4+180= 184 kg

the weight = mg (assuming g= 9.81 m/s^2)

weight = 184*9.81

weight= 1805.04 N

Answer:

6.03 m/s

Explanation:

Average speed = total distance traveled/total time taken

7 = 450 + 100/total time

total time = 550/7 = 78.57 s

Speed of camel on the bicycle = distance/time

25 = 100/time

time = 100/25 = 4 s

Total time = 78.57 s

Time spent riding bicycle = 4 s

Time spent walking = total time - time spent riding bicycle

                                  = 78.57 - 4 = 74.57 s

Speed of walking = distance walked/time spent walking

                             = 450/74.57

                                 = 6.03 m/s

Answer:

Explanation:

The kinetic energy of a body can be found by using the formula

where

m is the mass

v is the velocity

From the question

mass = 5 kg

velocity = 4 m/s

Substitute the values into the above formula and solve

We have

We have the final answer as

Hope this helps you

B) Cooler materials are highly dense, causing them to sink to the outer core.

Answer:

the answer is B i did the test

Answer:

Well it really depends because he found out about a lot of things in a lot of scientific fields actually. He is known for contributing Pascal's triangle and probability theory. He also invented an early digital calculator and a roulette machine. In the field of physics, Blaise contributed to the study of atmospheric pressure by discovering that vacuums are real and exist in the real world.

Answer:

Well it really depends because he found out about a lot of things in a lot of scientific fields actually. He is known for contributing Pascal's triangle and probability theory. He also invented an early digital calculator and a roulette machine. In the field of physics, Blaise contributed to the study of atmospheric pressure by discovering that vacuums are real and exist in the real world.

Explanation:

Answer:

3

Explanation:

just did it

Answer:

use this formula

Average Speed = (Total distance)/(Total Time) =

The answer to the question is 1.5708~1.571.

Answer: 10m/s²

Explanation: Acceleration= (v-u)/t

                                                 So here it’s (40-20)/2

                                                 Which is equal to 10

Answer:

The correct option is the second option with horizontal bars at a =  6, a = -1, and a = 4 m/s²

Please find attached the table of values and a graph representing the correct option

Explanation:

The given data can be presented as follows;

Time (s),                 Velocity (m/s),               Acceleration (m/s²)

0,                                    -1,                                        6

0.5,                                   2,                                       6

1,                                       5,                                        6

0,                                      5,                                       -1

0.5,                                  4.5,                                     -1    

1,                                       4,                                       -1

1.5,                                    3.5,                                     -1

2,                                     3,                                        -1

2.5,                                 2.5,                                      -1

3,                                     2,                                         -1

0,                                     2,                                          4

0.5,                                   4,                                         4

1,                                        6,                                        4

1.5,                                    8,                                         4  

2,                                     10,                                         4

From the data, and the graph the acceleration for the period from the time t = 0 to t = 1 is 6 m/s²

From t = 1 to t = 4, the acceleration is constant and equal to -1

From t = 4 to t = 6 the acceleration is also constant and equal to 4

Answer:

the density makes something float or sink below water its the "water weight "

Explanation:

Explanation:

We know that :

[tex]P = \frac{V^{2} }{R} [/tex]

Resistance of Bulb :

[tex]R = \frac{ V^{2} }{P } = \frac{ {(240)}^{2} }{280} = 205.71 \: ohms[/tex]

As per Ohms laws :

Current when (V = 200)

[tex]i \: = \frac{ V}{ R} = \frac{200}{205.71} = 0.97 \: A[/tex]

Answer:

Sonar

Explanation:

Sonar is a technique that involves the use of sounds in viewing substances in a water medium to aid movement or communication. It makes use of the advantage of sound waves traveling faster and farther in water when compared to other types of waves such as light waves.

During World War II, the military employed the use of SONAR in imaging the seafloor by sending pulses of sound waves down through the water and measuring the time it took for the sound to bounce off the seafloor and return to the receiver.

Answer:

i believe its c

Explanation:

I took the test

The one  best illustrates a study done in psychology is a study that shows how Katrina’s stress levels contribute to her obsessive exercise habits. The correct option is C.

Psychology is the scientific study of human mind and his behavior on various situations. It includes the study of conscious and unconscious phenomena, feelings and emotions attached to some person or a habit.

The psychology deals with the stress levels which make up the wrong habits. This may be caused due to overthinking, one starts to push himself more and more. He wants to stress out to manage this stress and does the exercise obsessively.

So, the study how Katrina’s stress levels contribute to her obsessive exercise habits is an example of psychology study.

Thus, the correct option is C.

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Answer:

2.2 m/s

Explanation:

use the formula to find meters per second

a) Live wire

b) It has gained extra electrons.

c) Part of circuit can be turned off while other parts remain on.

d) [tex] R=\frac{V}{I}=60 \Omega[/tex]

Answer:

After 2 seconds the velocity of the object is 0 m/s.

Explanation:

The velocity at 2 seconds later can be calculated as follows:

[tex] V_{f} = V_{0} - gt [/tex]

Where:

[tex]V_{f}[/tex]: is the velocity at 2 seconds

[tex]V_{0}[/tex]: is the initial velocity = 20 m/s

g: is the gravity = 10 m/s²

t: is the time = 2 s

Hence, the final velocity is:

[tex] V_{f} = V_{0} - gt = 20 m/s - 10 m/s^{2}*2 s = 0 m/s [/tex]

This value (0 m/s) means that the object has reached the maximum height.

Therefore, after 2 seconds the velocity of the object is 0 m/s.

I hope it helps you!

Answer:

Explanation:

No external force is acting on uranium nucleus so we can apply law of conservation of momentum . If M and m be the mass of bigger and smaller fragments respectively and V and  v be their velocity after fission , Total momentum after fission  = total momentum before fission

MV - mv = 0 , since the nucleus was at rest , its momentum before fission is zero . negative sign of mv is taken because smaller fragment  will move in opposite direction to that of bigger fragment .

MV = mv

M / m = v / V

M > m

Hence,

v > V

So velocity of smaller fragment will be higher .

Answer:

-5/2

Explanation:

8-6/4-12+3^2

8-6/4-12+9

2/4-12+9

LCM =4

(2-48+36)/4

(-46+36)/4

-10/4

-5/2

Answer:

They come in different kinds, called elements, but each atom shares certain characteristics in common. All atoms have a dense central core called the atomic nucleus. ... All atoms have at least one proton in their core, and the number of protons determines which kind of element an atom is.

If the time is doubled to reach the same final velocity, then the acceleration will be half the acceleration before.

The rate of change of an object's velocity with respect to time is defined as acceleration. Vector quantities are accelerations.

Let's assume the final and the initial velocity of the object is v and u, respectively. Also, the time it takes is represented by t. Therefore, the acceleration can be written as,

a₁ = (v-u)/t

Now, if the time is doubled then the acceleration can be written as,

a₂ = (v-u)/2t

    = (1/2) × [(v-u)/t]

    = 0.5 × a₁

a₂ = 0.5a₁

Hence, If the time is doubled to reach the same final velocity, then the acceleration will be half the acceleration before.

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Answer:

[tex] \boxed{\sf Focal \ length = 10 \ cm} [/tex]

Given:

Radius of curvature (R) of a spherical mirror = 20

To Find:

Focal length (f)

Explanation:

Formula:

[tex] \boxed{ \bold{\sf Focal \ length \ (f) = \frac{Radius \ of \ curvature \ (R)}{2}}}[/tex]

Substituting value of R in the equation:

[tex] \sf \implies f = \frac{20}{2} [/tex]

[tex] \sf \implies f = \frac{ \cancel{2} \times 10}{ \cancel{2}} [/tex]

[tex] \sf \implies f = 10 \: cm[/tex]

Focal length = 10 cm.

Solution :

Given radius of curvature = 20 cm.

Formula :

Focal length = Radius of curvature/2

→ Focal length = 20/2

→ Focal length = 10 cm.

Answer : 10 cm.

Answer: It goes inside filling most of it .

Explanation: This happens because the bottle is empty and the bucket is full of water.

Answer:

Force=mass×acceleration.

4:5 for masses , 2:3 for acceleration.

For the first car it will be 4×2=8N

For the second car it will be 5×3=15N

Answer:

Growth and Development

Answer: Autotrophs

Explanation: Autotrophs make their own food from nature. They do not depend on other creatures for food