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4 years ago

8

Displacement time squared graph

1 answer:

Scilla [17]4 years ago

6 0

If distance versus time<span> is a straight line then Free-Fall is at a constant velocity and the slope of the </span>graph<span> measures that velocity. If distance versus </span>time-squared<span> is a straight line then Free-Fall is at a constant acceleration and the slope of the </span>graph<span>measures one-half of that acceleration.</span>

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The chart lists the masses and velocities of four objects.

Karolina [17]

The chart lists the masses and velocities of four objects.

Which object requires the greatest change in momentum in order to stop its motion?

Answer

Z

4 0

3 years ago

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A comet is in an elliptical orbit around the Sun. Its closest approach to the Sun is a distance of 4.6 multiply 1010 m (inside t

Doss [256]

We will apply the concepts related to energy conservation to develop this problem. In this way we will consider the distances and the given speed to calculate the final speed on the path from the sun. Assuming that the values exposed when saying 'multiply' is scientific notation we have the following,

$d_1 = 4.6*10^{10}m$

$v_i = 9.3*10^4m/s \rightarrow \text{Initial velocity comet}$

$d_2 = 6*10^{12}m$

The difference of the initial and final energy will be equivalent to the work done in the system, therefore

$E_f = E_i +W$

$K_f +U_f = K_i +U_i + 0$

$\frac{1}{2} mv_f^2+\frac{-GMm}{d_2} = \frac{1}{2} mv_i^2+\frac{-GMm}{d_1}$

Here,

m = Mass

$v_f$ = Final velocity

G = Gravitational Universal Constant

M = Mass of the Sun

m = Mass of the comet

$v_i$ = Initial Velocity

Rearranging to find the final velocity,

$v_f = \sqrt{v_i^2+2GM(\frac{1}{d_2}-\frac{1}{d_1})}$

Replacing with our values we have finally,

$v_f = \sqrt{(9.3*10^4)+2(6.7*10^{-11})(1.98*10^{30})(\frac{1}{6*10^{12}}-\frac{1}{4.6*10^{10}})}$

$v_f = 75653.9m/s$

Therefore the speed is 75653m/s

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4 years ago

Which of the following is an example of a main sequence star

Westkost [7]

The star is the main sequence

3 0

3 years ago

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HURRY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Levart [38]

It is an example of "Elastic Potential Energy"

In short, Your Answer would be Option C

Hope this helps!

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3 years ago

What is the Difference between accuracy and precision ?<br>

Pie

Answer:

Accuracy measures how close results are to the true or known value. Precision, on the other hand, measures how close results are to one another.

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2 years ago

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