what is meant by an acceleration of negative 2metre per second square​

When the data of the position and time are available, the velocity which is the ratio of change in position to change in time which is the same as the slope of the graph of the data can be calculated. For the car, we have;

1. The car moves progressively further as the time interval increases

2. The relationship between the position of the car and the time interval is that the car moves approximately 0.02 units of distance for each change in time of 0.05

3. The speed of the car is 0.398

The reason for arriving at the above values are as follows:

1. From the given data, we have that the cart moves progressively further from the start for each time interval increase, such that the cart moves progressively further from the origin in each time interval increases

[tex]\begin{array}{|c|c|} \mathbf{ Time} & \mathbf{ Position}\\2.2&0.8963\\2.25& 0.9164\\2.3 & 0.9375\\2.35 & 0.9581\\2.4 & 0.9759\end{array}\right][/tex]

2. From the given data, we have;

At time t = 2.2, the position = 0.8963

At time t = 2.25, the position = 0.9164

The change in position for a change in time from 2.2 to 2.25 is, Δx = 0.9164 - 0.8963 = 0.0201

Similarly, for the change in time from 2.25 to 2.3, which is a change of 0.05 seconds, we have;

Δx = 0.9375 - 0.9164 = 0.0211

The next interval is 2.3 to 2.35, Δx = 0.9581 - 0.9375 = 0.0206

Therefore, the change in the distance from the origin increases by approximately 0.02 for each increase in tome by Δt = 0.05 seconds

3. The slope equation is presented as follows;

[tex]Slope = \dfrac{y_2 - y_1 }{x_2 - x_1}[/tex]

The speed of the car is given by the slope of the distance time graph, where;

The horizontal variable, x, is the time, t (x = t)

The vertical variable, y, is the position, x (y = x)

Based on the given assignment of the variables to the x, and y, variables, we have;

[tex]Slope = Speed = \dfrac{y_2 - y_1 }{x_2 - x_1} = \dfrac{x_2 -x_1}{t_2 - t_1} = \mathbf{\dfrac{Final \ position - Initial \ position }{Final \ time - Initial \ time}}[/tex]

Plugging in the values in the table, we have;

[tex]Speed = \dfrac{Final \ position - Initial \ position }{Final \ time - Initial \ time} = \mathbf{\dfrac{0.9759 - 0.8963 }{2.4 - 2.2}} = 0.398[/tex]

The speed of the car = 0.398

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Answer:

Explanation:

Density = mass / volume

density = 2.4

volume = 100 cm^3

2.4 = m / 100     Multiply both sides by 100

2.4 * 100 = m

m = 240 grams

Answer:

IV what is it's potential energy at the maximum height

Answer:

density is equal to mass divided by volume (m/v)

volume: 12×8×9=864cm³

75÷864=0.09

Answer: 0.09g/cm³

Answer:

E(efficiency) = E(out) / E(in)

.4 = 400 J / E (in)

E (in) = 1000 J

Heat input : 1000J

The efficiency of a heat engine  is defined as the ratio of work done by the heat engine absorbed per cycle.

Given : work output = 400 J

          Efficiency = 40 % = 0.4

          heat input = ?

Efficiency = work output / heat input

                0.4 = 400/heat input  

heat input : 1000J

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Answer:

16.18 mph

Explanation:

the speed of elevators =

(783×3600)/(33×5280) =

2,818,800/174,240 = 16.18 mph

Answer:

Element Chart

Explanation:

It is a chart that provides many different elements.

Answer:

1. heating

2. entertainment

3. cooling

4.educational purpose

5.comfort

Answer:

all of these very easy questions

Explanation:

Answer:

constructive

alpitude

Answer:

your answer is (B) decreasing

I hope it's helps you

Answer:

no worries

Explanation:

Leave it to me.

Answer:

17 cm

Because the equation you're using is ∆d=df

Answer:

It took 2 hours

Explanation:

[tex]{ \bf{time = \frac{distance}{speed} }} \\ [/tex]

distance is 90 miles

speed is 45 miles per hour

[tex]t = \frac{90}{45} \\ \\ t = 2 \: h[/tex]

Answer:

2 hours

Explanation:

45 times 2 is 90

Density of the metal is 8.9g/cm^3

Density:-

[tex]\boxed{\sf Density=\dfrac{Mass}{Volume}}[/tex]

SI unit:-

SI unit of density is kg/m^3

CGS unit of density is g/cm^3

Answer:

The answer is = 35.1 you can see by zooming.

Answer:

The answer would be 35.1

Answer:

+5m/s

Explanation:

When doing the math we figure out that e is going to be slowing down at -4m/s² for 5 seconds. In total he is slowing down -20m/s which we take from the total speed of +25m/s to get his current new speed.

Answer:

Divide by 1609

Explanation:

So to convert from m/s to m/s divide by 1609

Answer:

It is:

0.00477

0.00000301

Answer:

Answer in Observational evidence (b)

The evidence needed to formulate a hypothesis is observational evidence. From keen observations, we are formulating a scientific hypothesis.

Hypothesis is a plausible scientific statement which predicts a process or result of an experiment based on observations. Hypothesis can be made from well established scientific records also.

Some are formulating hypothesis based on some intuitions, while some others are formulated based on inductions or  deductions. An experiment starts from a clear cut hypothesis.

A hypothesis must be testable, falsifiable. A scientific hypothesis must be based on a strict observation and for a considerable time and the observations must support for the statement derived for the solution.

Hence, the evidence is needed for a or a hypothesis to be supported or not supported is observational evidence.

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The expression for the position of the particle in terms of velocity and time is given as, s = vt

The given expression:

To find:

Determine the value of the constants from second equation of motion given as:

[tex]s = vt + \frac{1}{2}at^2\\\\substitute \ the \ given \ value \ of \ a\\\\s = vt + \frac{1}{2}(c_1 + c_2v)t^2\\\\s = vt + \frac{1}{2} c_1 t^2 + \frac{1}{2} c_2vt^2\\\\divide \ through\ by \ t^2\\\\\frac{s}{t^2} = \frac{v}{t} + \frac{1}{2} c_1 + \frac{1}{2} c_2v\\\\multiply \ through \ by \ 2\\\\\frac{2s}{t^2} = \frac{2v}{t} + c_1 + c_2v\\\\when \ t = 0\\\\0 = 0 +c_1 + c_2v\\\\c_1 + c_2v = 0\\\\from \ the \ original \ equation;\\\\s = vt + \frac{1}{2} (c_1 + c_2v)t^2\\\\[/tex]

[tex]s = vt + \frac{1}{2}(0)^2\\\\s = vt[/tex]

Thus, the expression for the position of the particle in terms of velocity and time is given as, s = vt

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Zooming I. On the image the red line is just short of the 3rd line past the 7 so it is not 7.3 but just a little under.

Answer: 7.28

Explanation:

Move past each other.

Have a good day.

Answer:

Explanation:

Dhdhfhfjjfjffj

Answer:

Running is faster, uses more kilojoules and demands more effort from the heart, lungs and muscles than jogging. Running requires a higher level of overall fitness than jogging. Both running and jogging are forms of aerobic exercise.

Explanation:

Its speed is 4m/s

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Hi :)

The formula for velocity is

v = displacement / change in time

velocity = 100 m / 4 seconds

velocity = 25 m/s

The formula for velocity is

v = displacement / change in time

velocity = 100 m / 4 seconds

velocity = 25 m/s

Answer:

d=s

t

d=36

4

d=10m/s

Explanation:

distance is equal to speed over t therefore 36 divide by 4 is 10

Answer:

Explanation: is that suppose to be the question or are you just saying?