Answer:
640 m.
Explanation:
The following data were obtained from the question:
Acceleration (a) = –20 m/s/s
Time (t) = 8 s
Final velocity (v) = 0 m/s
Distance (s) =.?
Next, we shall determine the initial velocity (u) of the car. This can be obtained as follow:
Acceleration (a) = –20 m/s/s
Time (t) = 8 s
Final velocity (v) = 0 m/s
Initial velocity (u)
a = (v – u) / t
–20 = (0 – u) / 8
–20 = – u / 8
Cross multiply
–20 × 8 = – u
– 160 = – u
Divide both side by – 1
u = – 160 / – 1
u = 160 m/s
Finally, we shall determine the distance travelled by the car before stopping as follow:
Time (t) = 8 s
Final velocity (v) = 0 m/s
Initial velocity (u) = 160 m/s
Distance (s) =.?
s = (v + u)t /2
s = (0 + 160) × 8 /2
s = (160 × 8) /2
s = 1280 / 2
s = 640 m
Therefore, the car travelled 640 m before stopping.
HElP ME PLEASSEEEE ITS URGENT!!!
Answer:
1. states
2. kinetic theory
3.particles cqlled atoms
4.motion
5.collide
thats all I remember
a car traveling at a speed of 46 m/s encounters an emergency and comes to a complete stop. how much time will it take for the car to stop if it accelerates at -1m/s/s
WHICH TYPES OF ENERGY IS HAPPENING
Answer:
kinetic energy turned potential energy
Explanation:
it moves up the hill and stops so the movement is kinetic energy and the stop is potential energy
Potential energy calculation - MxGxH. Gravity equals 10. How much
potential energy does a 5 gram golf ball that is falling from 40 ft have? Use
your calculator if need be. *
Answer:
Ep = 0.6095 [J]
Explanation:
As defined in the problem statement, potential energy is defined as the product of mass by gravity by height. But first we must convert all the values given to measures of the international system (SI)
g = gravity = 10 [m/s^2]
h = elevation = 40 [ft] = 12.19 [m]
m = mass = 5 [g] = 0.005 [kg]
Ep = potential energy [J]
Ep = 0.005*10*12.19 = 0.6095 [J]
In a scientific test conducted in Arizona, a special cannon called HARP (High Altitude Research Project) shot a projectile straight up to an alti-tude of 180.0 km. If the projectile's initial speed was 3.00 km/s, how long did it take the projectile to reach its maximum height?
Answer:
It took the projectile 120 s to reach the maximum height.
Explanation:
Given;
maximum height of the projectile, s = 180 km = 180,000 m
initial speed of the projectile, u = 3 km/s = 3000 m/s
final velocity at maximum height, v = 0
Apply the following kinematic equation for average velocity of the projectile;
[tex]s = (\frac{v+u}{2} )t\\\\(v+u)t = 2s\\\\t = \frac{2s}{v+u} \\\\t = \frac{2*180,000}{0+3,000}\\\\ t = 120 \ s[/tex]
Therefore, it took the projectile 120 s to reach the maximum height.
Plz guys answer my question
Why can we have faith in our scientific understandings? Why or why not?
Find the length of a rectangle with the area 20cm² and width 10cm
Answer:
The answer is 2 because 10 times 2 equals 20
Explanation:
Answer:
2 cm
Explanation:
A=L * w
20 = 10 * L
L = 20/10
L = 2cm
I need help guyssss plssss
Answer:
Cd(NO3)2 + Na2S --> CdS + 2 NaNO3
Explanation:
Who yall think gonna win Seahawks or Vikings? Seahawks all the way
Answer:
Seahawks
Explanation:
THEY ARE THE BEST TEAM!!!
Answer:
seahawks
Explanation:
yes they r gud
What is the mass of a bowling ball if a 48 Newton force is accelerating the bowling ball
3m/s22
16 kg
0 45 kg
51 kg
144 kg
Next
Answer: The answer is 16Kg
Explanation:If you use the formula for mass, mass=force/acceleration and plug the numbers into the formula, 48/3 you would get
16Kg
Which of the following does not affect the solubility of sugar and water
A.crushing up the sugar
B.stirring
C.Temperature
D.adding salt to the water
Physics is Confusing :( pt 2
Answer:
C
Explanation:
yeah it is
True or False: Exercise is an underrated stress reliever and can be used to 25
overcome mental, physical, and emotional battles."
O True
False
Answer:
I think it is true I'm not saying it is but if you get another person who says its true say true
Explanation:
It’s due by tonight, please show work.
What is part of the fourth stage in the process of technological design?
O rebuilding and retesting a product
O analyzing the results of a prototype
establishing criteria for a successful product
identifying and defining a problem or need
Answer:
It is A.
Explanation:
Got it right on Edge 2022.
Rebuilding and retesting a product is part of the fourth stage in the process of technological design, therefore the correct answer is option A.
What are the stages of technological design?There are mainly five stages of the technological design
Identifying the issue that needs to be solved is the first step in every problem-solving process.
The second stage is to imagine; during this phase, a designer would generate several concepts and conduct research on potential creations. They must pick a handful of their greatest concepts and then narrow it down to the best.
The chosen product from the imaging stage is planned in the third stage. This process involves designing and drawing the product so that it may be turned into a model or prototype while taking into account the constraints they have to deal with.
Testing, evaluating, and modifying the product are the fourth stage. The designer can determine what they appreciate about their product and what they could change by making a model or prototype of it. Through product testing, this is discovered. If adjustments are required, the designer will repeat the entire procedure until they are satisfied with the final result.
The sharing of your solution is the fifth step. To gather comments, discuss your ideas with others, and enhance your product, you showcase your solution. You might show your answer to a bigger audience in later stages after you've gone through the design process a few times. This is comparable to how World of Inquiry students modifies their homework numerous times before presenting them during the expedition.
Thus, Rebuilding and retesting a product is part of the fourth stage in the process of technological design, therefore the correct answer is option A.
Learn more about technological design here
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The organisms and environments that make up a community, called an Response area, are constantly changing. Sudden and violent events, such as Response area from the ocean and Response area, that often cause these changes are called Response area. Response area results when rainfall exceeds the holding capacity of a drainage system.
Answer:
ecosystem; hurricanes and tornadoes; catastrophic events.; Fooding; moving water; soil
Explanation:
After using the word bank to fill in the blanks in the passage, the passage reads;
"The organisms and environments that make up a community called an ecosystem are constantly changing. Sudden and violent events, such as hurricanes and tornadoes that often cause these changes are called catastrophic events. Fooding results when rainfall exceeds the holding capacity of a drainage system. The energy of the fast-moving water and the layers of sediment carried by it can uproot or bury plants, reshape the soil and destroy roads and buildings."
Define kinetic energy and thermal energy. Describe what happens to each as the temperature of a substances increases.
Answer:
All matter is made up of particles that are constantly moving. The motion of the particles results in kinetic energy. The part of total internal energy that can be transferred is thermal energy. As temperature increases, the particles in a substance move faster and have greater kinetic and thermal energy.
Explanation:
Use the information from the graph to answer the question. What is the acceleration of the object?
m/s2
The acceleration of the object is determined as -2.5 m/s².
What is acceleration?Acceleration is the rate of change of velocity with time.
Mathematically, acceleration is given as;
a = Δv/Δt
a = (v₂ - v₁)/(t₂ - t₁)
where;
v₂ is the final velocityv₁ is the initial velocityt₂ is the final timet₁ is the initial timeFrom the graph;
the initial velocity = 40 m/s
the final velocity = 10 m/s
the final time = 12 seconds
the initial time = 0 second
acceleration = (10 - 40) / (12 - 0)
acceleration = -30/12
acceleration = -2.5 m/s²
Thus, the acceleration of the object is determined as -2.5 m/s².
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If you could repeat the lab and make it better, what would you do differently and why? There are always ways that labs can be improved. Now that you are a veteran of this lab and have experience with the procedure, offer some advice to the next scientist about what you suggest and why. Your answer should be at least two to three sentences in length.
Answer:
I suggest that you recheck your answers multiple times and make sure that they are making sense. Also I think that you should Study the organisms very well and you should be careful when making observations so that you really are sure that the organism has 4 wings and not only 2 wings(for example).
Explanation:
I hope this answers your question
PLEASE MARK ME BRAINLIEST :) :) :) :) :)
You burn a 100 kg log. If you add the mass
of the log, soot and gasses given off
while the log was burning they will equal
A.120kg B. 50kg C.100 D. 80
Answer:c.100
Explanation:
A 25.1 kg boy climbs to the top of a 11.08 m tall water slide at an amusement park. He carries a 2.94 kg rubber ball with him. Taking the bottom of the slide to be the zero point, what is the gravitational potential of just the boy in joules? (do not include units)
Answer:
3080
Explanation:
Potential energy is the energy stored or contained in a body as a result to its relative position to other objects, an example is an object that is placed at a height above the ground thereby experiencing gravitational energy.
Potential energy = mass × gravity × height
Given that: height = 11.08 m, gravity = 9.81 m/s² and mass = mass of boy + mass of ball = 25.1 + 2.94 = 28.34 kg
Potential energy =28.34 × 9.81 × 11.08 = 3080
What role do electrons play in creating intermolecular forces?
The electrons repel positively charged molecules
Electron movement creates partial charges in different regions of molecules
They don't play any role
Electrons prevent dipole dipole interactions
Answer:
Electron movement creates partial charges in different regions of molecules.
Explanation:
The electrons play a role in the creation of London forces, which are intermolecular forces produced by the movement of the electrons in the atoms and molecules. The distribution of electrons will produce the formation of a temporary dipole, generating a partial charge in the atoms, which can induce a dipole into a subsequent atom (creating again partial charge), and so on.
Hence, the correct option is the second option: Electron movement creates partial charges in different regions of molecules.
I hope it helps you!
The role played by electrons in creating intermolecular forces is that electron movement creates partial charges in different regions of molecules.
Molecules are held together by intermolecular forces. There are several kinds of intermolecular forces such as;
Dipole - dipole interactionDispersion forcesHydrogen bonding etcIn all the kinds of intermolecular interactions mentioned above, interaction between molecules is made possible by movement of electrons which creates temporary or permanent dipoles in molecules due to partial charges in different regions of molecules.
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What does it mean to say that mass is conserved during a physical change?
This law states that, despite chemical reactions or physical transformations, mass is conserved — that is, it cannot be created or destroyed — within an isolated system. In other words, in a chemical reaction, the mass of the products will always be equal to the mass of the reactants.
Answer:
100% oon test
Explanation:This law states that, despite chemical reactions or physical transformations, mass is conserved — that is, it cannot be created or destroyed — within an isolated system. In other words, in a chemical reaction, the mass of the products will always be equal to the mass of the reactants.
A plane is heading south at 250 mi/hr. If the jet stream (wind) is blowing from west to the east at 80 mi/hr, what is the speed and direction of the plane?
Answer:
Speed = 262.49
Direction = 72.26°
Explanation:
[tex] \sqrt{ {250}^{2} + {80}^{2} } [/tex]
=262.49mi/hr
[tex] \tan( \alpha ) = \frac{y}{x} [/tex]
[tex] \tan( \alpha ) = \frac{250}{80} [/tex]
[tex] \alpha = {tan}^{ - 1} ( \frac{250}{80} )[/tex]
=72.26°
a runner covers the last straight stretch of the race in 4 s. durning that time, he speeds up from 5 m/s to 9m/s what is the runners acceleration in this part of the race?
Answer:
The runner's acceleration was [tex]1\ m/s^2[/tex]
Explanation:
Constant Acceleration Motion
It's a type of motion in which the velocity of an object changes by an equal amount in every equal period of time.
Being a the constant acceleration, vo the initial speed, vf the final speed, and t the time, the following relation applies:
[tex]v_f=v_o+at[/tex]
Solving for a:
[tex]\displaystyle a=\frac{v_f-v_o}{t}[/tex]
The runner speeds up from vo=5 m/s to vf=9 m/s in t=4 seconds, thus:
[tex]\displaystyle a=\frac{9-5}{4}[/tex]
[tex]\displaystyle a=\frac{4}{4}=1[/tex]
The runner's acceleration was [tex]1\ m/s^2[/tex]
How do you calculate Mass using the formula for force?
Group of answer choices
acceleration plus force
Force divided by acceleration
force times acceleration
force minus acceleration
---------------------------------------------------------------
How do you calculate mass using the density formula?
Group of answer choices
density plus volume
density times volume
density minus volume
Density divided by the volume
---------------------------------------------------------------
How do you calculate distance using the speed formula?
Group of answer choices
Time plus speed
speed times time
speed divided by time
speed minus time
---------------------------------------------------------------
How do you calculate volume using the density formula?
Group of answer choices
Mass times density
Mass divided by the density
Mass minus density
Density divided by the mass
---------------------------------------------------------------
How do you calculate acceleration using the force formula?
Group of answer choices
Mass divided by force
Force times mass
Mass times force
force divided by the mass
what is the relationship between velocity and kinetic energy?
Answer:
when an object has more velocity, it tends to have less potential energy and more kinetic energy.
Explanation:
kinetic energy is the energy of movment and velocity helps to describe movement
A speed-time graph is shown below:
Speed vs. Time
What is the average acceleration of the object represented in the graph above over the eight seconds?
A) 0.5 cm/s2
B) 1.0 cm/s2
C) 1.5 cm/s2
D) 2.0 cm/s2
Answer:
The average acceleration of the object is 0.5 cm/s^2. Answer: A)
Explanation:
Average Acceleration
The average acceleration of a moving object is the rate at which the speed changed over time in a specific period. It can be calculated as follows:
[tex]\displaystyle \bar a=\frac{v_f-v_o}{t}[/tex]
Where vf is the final speed, vo is the initial speed and t is the time.
The speed-time shows the speed starts at 0 cm/s and ends at 4 cm/s over the 8 seconds period. The average acceleration is:
[tex]\displaystyle \bar a=\frac{4-0}{8}=0.5[/tex]
The average acceleration is 0.5 cm/s^2
A) Correct. The average acceleration is 0.5 cm/s^2
B) Incorrect. The average acceleration is 0.5 cm/s^2
C) Incorrect. The average acceleration is 0.5 cm/s^2
D) Incorrect. The average acceleration is 0.5 cm/s^2
Answer:
A) 0.5 cm/s2
Explanation
I took the quiz the correct answer is A
Please help! Due in 10 min! Please show work!
Davien and Jackson are headed to a beach that is 50km from school. At noon, Davien leaves his house that is 10 km closer to the beach than the school is and moves at 40 km/h. Jackson starts from school at 12:30 P.M. and moves at 100 km/h. What time does Davien reach the beach? *
Answer:
They both arrive at 1:00 PM
Explanation:
Amount Davien has to drive : 40km
Amount Jackson has to drive = 50km
Davien moves at 40km/h,
Therefore, it only takes Davien 1 hour to get there.
12:00 PM + 1 hour = 1:00 PM
Jackson moves 100km/h
He needs to drive 50 min, so 50/100 = 1/2
It takes him half an hour, or 30minutes
If he leaves at 12:30, then he gets there at 1:00 PM
