Answers
Answer:
1 and 2
Explanation:
If an object has constant acceleration, it's displacement at time t is:
Δx = v₀ t + ½ at²
For object 1:
0.44 = (0) (0.3) + ½ a (0.3)²
a = 9.78
3.14 = (0) (0.8) + ½ a (0.8)²
a = 9.81
So object 1's acceleration is approximately constant.
For object 2:
0.06 = (0) (0.3) + ½ a (0.3)²
a = 1.33
3.09 = (0) (2.1) + ½ a (2.1)²
a = 1.40
So object 2's acceleration is approximately constant.
For object 3:
0.44 = (0) (0.3) + ½ a (0.3)²
a = 9.78
3.09 = (0) (2.1) + ½ a (2.1)²
a = 1.40
So object 3's acceleration is not constant.
Related Questions
If a swimmer is traveling at a constant speed of 2 m/s, how long would it
take to swim the length of a 50-meter Olympic sized pool ?*
Answers
Which best describes internet wikis as a source of scientific information
Answers
Answer:
They are written or edited by anyone
Explanation:
In many locations, old abandoned stone quarries have become filled with water once excavating has been completed. While standing on a 10.0 m high quarry wall, Clarence tosses a piece of granite into the water below. If Clarence throws the rock horizontally with a velocity of 3.0 m/s how far out from the edge of the cliff will it hit the water?
Answers
Answer:
Explanation:
Let us calculate the time of flight first using the formula;
Velocity = Displacement/Time
Time = Displacement/speed
Time = 10.0/3
Time = 3.33secs
Next is to calculate how far out from the edge of the cliff it will hit the water. To get that, we will use the equation of motion;
S= ut+1/2gt²
u is the initial velocity = 0m/s
g is the acceleration due to gravity = 9.81m/s
S = 0 + 1/2(9.81)(3.33)²
S = 4.905*3.33*3.33
S = 54.39m
Hence it will hit the water at 54.39m from the edge of the cliff
Answer:
It will hit the water at [tex]4.28m[/tex] off the cliffExplanation:
Applying kinematic relations along vertical direction
[tex]y = V_0t + \frac{1}{2}a_yt^2[/tex]
where,
[tex]a_y = g[/tex]
therefore,
[tex]y = 0 + \frac{1}{2}gt^2[/tex]
The time taken
[tex]t = \sqrt{\frac{2y}{g}}\\\\t = \sqrt{\frac{2*10}{9.8}}\\\\t = 1.428s[/tex]
The horizontal distance
[tex]x = V_yt\\\\x = 3*1.428\\\\x = 4.28m\\\\[/tex]
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An object is moving along a straight line. The graph shows the velocity of the object over
time.
What is the instantaneous acceleration of the object at time = 9.5 seconds?
A.-20 m/s2
B.0 m/s2
C.20 m/s2
D.-10 m/s2
Answers
Answer:
From 9 to 10 sec the velocity is decreasing at a constant rate.
Change in V = 20 m/s - 30 m/s = -10 m/s
Since acceleration is constant from point E to point F (straight line)
and t = 9.5 sec is on this line
a = (20 m/s - 30 m/s) / 1 sec = -10 m/s^2
The instantaneous acceleration of the object at time = 9.5 seconds is - 10 m/s².
What is acceleration?Acceleration is the rate at which speed and direction of velocity vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates. Even if the speed is constant, motion on a circle accelerates because the direction is always shifting.
From t = 9 second to t =10 second the velocity of the object decreases at a constant rate.
Change in velocity of the object = final velocity - initial velocity
= 20 m/s - 30 m/s
= -10 m/s
time interval is = 10 sec - 9 sec = 1 sec.
Hence, acceleration of the object is: a = Change in velocity/ time interval
= - 10 m/s/1s
= -10 m/s²
Therefore, the instantaneous acceleration of the object at time = 9.5 seconds is - 10 m/s².
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what are muons in cosmology
Answers
Answer:
Explanation:
Muons in the atmosphere, a component of cosmic rays. Atmospheric muons are an essential component of cosmic ray showers. When a high energy primary particle coming from space collides with a nucleus of the upper atmosphere, it generates a spray of particles which later interact in their turn.
Which explains how to calculate the average acceleration of a moving object?
1.Divide the change in velocity by the change in time.
2.Multiply the change in time by the change in velocity.
3.Divide the change in time by the change in velocity.
4.Subtract the velocity from the change in time.
Answers
Answer Multiply the acceleration by time to obtain the velocity change: velocity change = 6.95 * 4 = 27.8 m/s . Since the initial velocity was zero, the final velocity is equal to the change of speed.
v, start subscript, a, v, g, end subscript, equals, start fraction, delta, x, divided by, t, end fraction, equals, start fraction, minus, 4, start text, space, m, end text, divided by, 5, start text, space, s, end text, end fraction, equals, minus, 0, point, 8, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction
The minus sign indicates the average velocity is also toward the rear of the plane.
The average velocity of an object does not tell us anything about what happens to it between the starting point and ending point, however. For example, we cannot tell from average velocity whether the airplane passenger stops momentarily or backs up before he goes to the back of the plane. To get more details, we must consider smaller segments of the trip over smaller time intervals. For instance, in the figure below, we see that the total trip displacement,
Answer:
bdjdiosfjigjdigjtrht <3
Explanation:
2. A race car travels a complete lap on a circular track of radius 500 m in 50 s. What is the
average velocity of the race car? (1 pt)
a. Zero
b. 100 m/s
C. 200 m/s
d. None of the above
3. In problem two. What would be the average speed? (2 pts)
1
Answers
Answer:
100m/s
Explanation:
velocity = displacement/time
The average velocity of the race car around the circular track in the given time is 62.8m/s.
Hence, option D) None of the above is the correct.
What is Average Velocity?Average velocity is simply the displacement of a particle or object over time. It is the rate of change of position of an object with respect to time.
It is expressed as;
Velocity = displacement / time
It can also be expressed as;
Velocity = circumference / time = 2πr / t
Given the data in the question;
Radius of the track r = 500mTime elapsed t = 50sAverage velocity V = ?To determine the average velocity, we substitute our values into the expression above.
V = 2πr / t
V = ( 2 × 3.14 × 500m ) / 50s
V = 3140m / 50s
V = 62.8m/s
The average velocity of the race car around the circular track in the given time is 62.8m/s.
Hence, option D) None of the above is the correct.
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Study habits include
a.
How you prepare for assignments
c.
What questions you ask your teacher
b.
How you take tests
d.
All of these
Please select the best answer from the choices provided
A
B
C
D
Answers
Answer:
D
Explanation:
Study habits include, how you prepare for assignments, what questions you ask your teacher, and How you take tests, all of these come under study habits, therefore the correct answer is option D.
What is science?The deliberate evidenced based quest and application of information and comprehension of the natural implications for society is what is known as research.
Science is a methodology of discovering more about the world.
People may contribute to the development of new knowledge through science and utilize it to promote their objectives.
A student's study habits include factors like how they approach tasks, questions they ask their professors, and how they prepare for the exam
Thus, the correct answer is option D.
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Ten Seconds after starting from rest, a car moving at 40 m/s what is the cars average acceleration
Answers
Answer:
[tex]4ms {}^{ - 2} [/tex]
Explanation:
We can use equation of motion to solve this
[tex]v = u + at \\ 40 = 0 + a(10) \\ a = 4m {s}^{ - 2} [/tex]
Matter is all around us and is made of atoms. How are atoms of different elements different from each other? How do these differences relate to their properties?
Answers
Answer:
it all depends on the protons and the neutrons of that element.
A Tale f Two Elephants
1. what organisms are shown?
2. Do they look the same?
3. Do the pictures show the same species?
4. How are they similar?
5. How are they different?
Answers
Answer:
u need it now?
Explanation:
I'll answer it
Based on the diagram above, the organisms that are shown are elephants.
What is a species?A species simply refers to a biological classification of related organisms that have the same (similar) characteristics and they are capable of mating (breeding) with one another in a cycle (different seasons).
Based on the diagram above, we can logically deduce that the organisms shown are species of elephants and they look similar due to the following points:
They both have a single tail.They both have ears.They both have four legs.They both have tusk.However, an obvious difference between them is the number of tusk.
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What do all of the elements in group 13 have in common?
Answers
You hang a book bag on a spring scale and place the bag on a platform scale so that the platform scale reads 29.7 N and the spring scale reads 17.6 N.
Answers
Hello. This question is incomplete. The full question is:
You hang a book bag on a spring scale and place the bag on a platform scale so that the platform scale reads 29.7 N and the spring scale reads 17.6 N.
What is the magnitude of the force that Earth exerts on the bag?
Answer:
47.3 N
Explanation:
the entire system shown in the question above is at rest. Which greatly facilitates the calculation that we must do. In this case, to measure the magnitude that the force of the earth has on the backpack, you only need to add the two forces that you already know in the system.
In that case, it would be, you should calculate:
F= 29.7 N+ 17.6 N
F= 47.3N
PLS HELP. A flatbed car of a train moves 8 m/s to the east. A jogger runs along to top the flatbed car (which is not very safe) with a velocity of 6 m/s to the west. How fast is the jogger moving?
Answers
Answer:
2 m/s
Explanation: Given that a flatbed car of a train moves 8 m/s to the east. A jogger runs along to top the flatbed car (which is not very safe) with a velocity of 6 m/s to the west.
Since the jogger is moving in an opposite direction to the direction of the train, and velocity is the distance covered in a specific direction, the jogger will be moving at a velocity relative to the velocity of the train.
Velocity = (8 - 6) m/s
Velocity = 2 m/s
Therefore, the jogger will be moving at the speed of 2 m/s
GO
10 20
What is one standard kilogram define in Si system
Answers
Answer:
The mass of cylinder made up of alloy of platinum iridium that is kept at international bureau of weights and measures is called one standard kilogram.
The system of seven fundamental quantities is called SI system .
Does the earth emit visible light or heat
Answers
Answer:
Heat
Explanation:
Which of the following is an example of a capital investment for a retail store? A buying ads in local newspapers B hiring sales clerks and managers C buying cash registers and displays D renting retail space at a mall
Answers
Answer:
D. renting retail space at a mall
Explanation:
Retail is the process of selling the customer goods and services by various channels of distribution to earn a profit. Capital investment includes the distinct ways in which a vendor or an individual may make the capital investment in a business. Money that is handed over as a loan or promise for the repayment.A snail can move app approximately 0.30 inches per minute. How many meters can the snail cover in 15 minutes
Answers
Answer:
4.5 because just do the math and its 4.5
What is the velocity of the object moving from 3 - 7 seconds?
O m/s
-6 m/s
6 m/s
Answers
That's the flat-top marked ' B '.
It's 6 m/s.
Subduction occurs when:
-a plate with continental crust sinks beneath a plate with
oceanic crust
-a plate with oceanic crust sinks beneath a plate with
continental crust
-two plates move apart from one another
two plates slide past one another
Answers
Explanation:
a plate with oceanic crust sinks beneath a plate with
continental crust is the answer
What is meant by the term work done?
Answers
Need help! Photo says all! Will mark brainliest :)
Answers
Answer:
number 2!
Explanation:
Answer:
2s to 4s
Explanation:
Since the graph measures acceleration over time, when the line does not move up or down is when you can see a constant velocity.
What is a hypothesis?
A.
a statement that can be tested through a scientific investigation
B.
a description of the steps involved in an experiment
C.
a statement that summarizes the results of an experiment
D.
a question that cannot be scientifically tested
Answers
Answer:
A
Explanation:
a statement that can be tested through the scientific method
us
Is this an example of a theory or law? Planets orbit the sun
elliptically.
Theory
Law
Answers
The answer to your question is law.
A force of 200N is creating a pressure of 50Pa on a surface. Calculate the area of the surface.
Answers
Answer:
4kg
Explanation:
pressure=50pa
force=200N
Area=?
now,
pressure=force/area
50=200/area
area=200/50
area=4kg
The pressure is the forces acting on a given area. Hence, the area of the surface with a pressure of 50 Pa by a force of 200 N is 4 m².
What is force?Force is an external agent acting on a object to deform it or to change its state form motion or rest. Force is a vector quantity and it is characterised by its magnitude and direction. The unit of force is Newton (N).
Pressure is the force applied on unit area. Thus, as the force increases, pressure increases. Pressure can have the units in atm, pa, N/m² etc.
Pressure = Force / area.
Given that force = 200 N
pressure = 50 Pa = 50 N/m²
Therefore, area = force/pressure
= 200 N / 50 Pa
= 4 m²
Therefore, the area of the surface is 4 m².
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What is the smallest part of a chemical compound that has all the properties
of that compound
A. A nucleus
B. A mineral
C. An atom
D. A molecule
Answers
Answer:
D. A Molecule
Explanation:
The smallest particle of a compound that still has the properties of the compound is a molecule. It is composed of two or more bonded atoms.
The smallest part of a chemical compound that has all the properties of that compound is a molecule (option d)
In the world of chemistry, substances are composed of tiny units called atoms, and these atoms bond together to form chemical compounds.
Option A, a nucleus, refers to the central core of an atom and consists of protons and neutrons. While essential for an atom, a nucleus alone does not represent a complete chemical compound.
Option B, a mineral, is a naturally occurring inorganic substance with a specific chemical composition and a definite atomic structure. However, minerals are not the smallest parts of a chemical compound.
Option C, an atom, is the fundamental building block of matter. It consists of a nucleus (containing protons and neutrons) surrounded by electrons. While atoms are crucial for forming compounds, they are not the smallest unit that retains all the properties of a compound.
Therefore, the correct answer is Option D, a molecule. A molecule is a group of two or more atoms bonded together, representing the smallest part of a chemical compound that possesses all the characteristics and properties of that compound.
Hence the correct option is (d).
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How long would it take you too run the 100m sprint if from rest you accelerate at 2m/s/s for the whole race?
Answers
Answer:
10 s
Explanation:
Given:
Δx = 100 m
v₀ = 0 m/s
a = 2 m/s²
Find: t
Δx = v₀ t + ½ at²
100 m = (0 m/s) t + ½ (2 m/s²) t²
t = 10 s
A 95kg clock initially at rest on a horizontal floor requires a 560N horizontal force to set it in motion. After the clock is in motion, in horizontal force of 650N
Answers
Complete Question
A 95 kg clock initially at rest on a horizontal floor requires a 650 N horizontal force to set it in motion. After the clock is in motion, a horizontal force of 560 N keeps it moving with a constant velocity. Find the coefficient of static friction and the coefficient of kinetic friction.
Answer:
The value for static friction is [tex]\mu_s = 0.60[/tex]
The value for static friction is [tex]\mu_k = 0.70[/tex]
Explanation:
From the question we are told that
The mass of the clock is [tex]m = 95 \ kg[/tex]
The first horizontal force is [tex]F _s = 560 \ N[/tex]
The second horizontal force is [tex]F _k = 650 \ N[/tex]
Generally the static frictional force is equal to the first horizontal force
So
[tex]F _s = m * g * \mu_s[/tex]
=> [tex]560 = 95 * 9.8 * \mu_s[/tex]
=> [tex]\mu_s = 0.60[/tex]
Generally the kinetic frictional force is equal to the second horizontal force
So
[tex]F _k = m * g * \mu_k[/tex]
[tex]650 = 95 * 9.8 * \mu_k[/tex]
[tex]\mu_k = 0.70[/tex]
A toy car has an initial velocity of 5 m/s and experiences a constant acceleration of 2.0 m/s2. How far does the toy car travel before reaching a velocity of 11 m/s? Write your answer to one decimal place.
Answers
Answer:t would be 17 m/s
If we use V2 = V1 + a*t
Sub in 5 for v1
2m/s*2 for a
And
6 for t
That should give you the answer.
A cyclist must travel 800 kilometers. How many days will the trip take if the cyclist travels at an average speed of 16 km/h
Answers
Answer:
2 days 2 hours or 50 hours
Explanation:
800/16=50