A one kilogram stone, falling freely form a height of 10 m , strikes the ground with a velocity

Using third equation of kinematics

[tex]\\ \rm\longmapsto v^2=u^2+2as[/tex]

[tex]\\ \rm\longmapsto v^2=0^2+2(0.5)(1.6)[/tex]

[tex]\\ \rm\longmapsto v^2=1.6[/tex]

[tex]\\ \rm\longmapsto v=\sqrt{1.6}[/tex]

[tex]\\ \rm\longmapsto v=0.4m/s[/tex]

Now using 1st equation of motion

[tex]\\ \rm\longmapsto v=u+at[/tex]

[tex]\\ \rm\longmapsto t=v-u/a[/tex]

[tex]\\ \rm\longmapsto t=\dfrac{0.4-0}{0.5}[/tex]

[tex]\\ \rm\longmapsto t=\dfrac{4}{5}[/tex]

[tex]\\ \rm\longmapsto t=0.8s[/tex]

Answer:

Using third equation of kinematics

[tex]\begin{gathered}\\ \rm\longmapsto v^2=u^2+2as\end{gathered}[/tex]

⟼v

2

=u

2

+2as

[tex]\begin{gathered}\\ \rm\longmapsto v^2=0^2+2(0.5)(1.6)\end{gathered}[/tex]

⟼v

2

=0

2

+2(0.5)(1.6)

Answer:

Below

Explanation:

4. You can use this formula to calculate the acceleration of an object

     acceleration = velocity / elapsed time

Plugging our values in....

     acceleration = 1700 m/s / 25 s

                          = 68 m/s^2

5. You can use this formula to calculate the final velocity of an object

     finalvelocity = initialvelocity + (acceleration) (time)

Plugging our values in....

     finalvelocity = 1.5 m/s + (2.4 m/s^2) ( 3 seconds)

                         = 8.7 m/s

Hope this helps! Best of luck <3

Explanation:

if the mass of both of the objects is doubled, then the force of gravity between them is quadrupled; and so on.

Answer:

So, if a body is taken to moon, the moon attracts the body with a force less as compared to the attraction force by the earth. Hence the weight decreases.

Explanation:

Get serious !

It's (length) • (width) • (height) .

Answer:

Pressure is 1.96 × 10^12 Pa

Explanation:

[tex]{ \bf{pressure = \frac{force}{area} }}[/tex]

height = 4 cm = 0.04 m

density = 20 g/cm³ = 20,000 kg/m³

But for force:

[tex]{ \sf{force = mass \times acceleration}} \\ { \sf{force = ( \frac{density}{volume} ) \times acceleration}} \\ \\ { \sf{force = ( \frac{20000 }{0.04 {}^{3} }) \times 10 }} \\ \\ { \sf{force = 3.13 \times {10}^{9} \: newtons}}[/tex]

For area:

[tex]{ \sf{area = 0.04 \times 0.04 = 0.0016 \: m {}^{2} }}[/tex]

[tex] { \tt{pressure = \frac{3.13 \times {10}^{9} }{0.0016} }} \\ \\ = { \tt{1.96 \times {10}^{12} \: pascals}}[/tex]

Answer:

if the distance between them is halved then gravitational force will be doubled....

Answer:

Your father has just built a new house for the family. Write a letter to your either brother who lives abroad describing the new house and the prestige has accorded your family

Answer:

potassium and iodine

Explanation:

Explanation:

I hope it helped U

stay safe stay happy

Answer:

hope this helps

Explanation:

one in which a positively charged nucleus is surrounded by one or more negatively charged electrons.

Answer:

[tex]accelaration = \frac{v}{t} \\ = in \: intial2sec \: v = 40 \\ a = \frac{40}{2} = 20 \frac{m}{ {se}^{2} } \\ thank \: you[/tex]

Answer:

20 m/s^2

Explanation:

v = u + at

Velocity:-

u = 0

v2 = 40

v = v2 - u = 40 - 0 = 40

Time:-

t2 = 2

t1 = 0

t = t2 - t1 = 2 - 0 = 2

Substituting v and t in formula,

v = u + at

40  = 0 + (a)(2)

2a = 40

=> a = 40/2

=> a = 20

Answer:

a - temperature

b sun ( how things work science)

Answer:

(A)

Explanation:

because they are asking at temperature does water boil they can do experaments to find or they can use science

Answer:

4

Explanation:

because when u have 5 then take 1 away u have 4

Answer:

Velocity

Explanation:

hope this helps

Answer:

Speed in a given direction is called velocity.

Explanation:

Answer:

The inquiry process takes advantage of the natural human desire to make sense of the world... This attitude of curiosity permeates the inquiry process and is the fuel that allows it to continue. Process skills are not used for their own sake.

Answer:

33m

Explanation:

Step 1: Whats going on?

We know that since they meet in the middle, and dont stop, that both knights take the same time to travel to the middle. This means that if they are traveling at a constant speed we can easily calculate the distance each travels

Step 2: Model it with Equations

General equation: V = D/t  [m/s]

T = D1 + D2 = V1*t + V2*t = t * (v1 + v2)

Step 3: Sub in knowns

T = 2.2 s* (6m/s + 9m/s)

T = 33m

Answer:

nine hundred ninety nine

Explanation:

/h/ /t/ /o/

9. 9. 9

Answer:

The value of g on the moon is 1.625 m/s2 and the value of the g on the jupiter is 2.528g.

Jupiter's surface gravity is 24.79/s or 2.528 g .

The acceleration due to gravity on the surface of the moon is approximately 1.625m/s .

hope this helps you

mrk me braniliest plzz

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:

D (density) = Mass / Volume

V (ice) = Mass / Density = 50000 g / .92 kg / L

V = 50 kg / .92 kg / L  

1 Liter of water weighs 1 kilogram = 50 L weighs 50000 g

V = 54.3 L     the mass does not change upon the change of phase (freezing)

Answer:

213K = 100. 56

189K = 87. 22

113K = 45

201K = 93. 88

Explanation:

The formula for F to C = ( 1. 8*C) + 32

So, C = (F - 32) ÷ C

Using 3rd equation of kinematics

[tex]\\ \rm\longmapsto v^2-u^2=2as[/tex]

[tex]\\ \rm\longmapsto s=\dfrac{v^2-u^2}{2a}[/tex]

[tex]\\ \rm\longmapsto s=\dfrac{30^2-15^2}{2(5)}[/tex]

[tex]\\ \rm\longmapsto s=\dfrac{900-225}{10}[/tex]

[tex]\\ \rm\longmapsto s=\dfrac{675}{10}[/tex]

[tex]\\ \rm\longmapsto s=67.5m[/tex]

Answer:

It's 2–

Explanation:

Usually, in ionic bonds, these elements will receive 2 electrons, so its ion will carry a 2– charge

The ionic charge its ion will carry will be 2-

An element is required to have 8 electrons in its outermost shell to assume it's full octet configuration.

The statement above of course excludes Hydrogen and helium which have only 1 and 2 electrons respectively.

An element with 6 Valence electrons would require 2 electrons to assume the full octet configuration.

As such, it is liable to accept 2 electrons from an electropositive element or group of elements to complete it's octet.

Therefore, accepting 2 electrons adds 2 negative charges and consequently, the ionic form of the element carries a 2- ionic charge

Read more:

https://brainly.com/question/13822373

Explanation:

The relative change in length of the edges of a cube are the coef times the change in temperature.

One meter expands to (1 + coef x 100C) = 1.0019 meter

Divide the mass by this number cubed to correct for volume expansion.

10310 kg / 1.00571 = 10251 kg/m3

Answer:

0.0054 » two significant figures.

78.0 » three significant figures.

0.09002 » four significant figures.

0.993 » three significant figures.

Explanation:

[tex].[/tex]

Answer:

6.68 km

Explanation:

distance = speedxtime

45.8 x 146

6686.6 m

[tex]\Large{\underline{\sf Given:-}}[/tex]

[tex]\Large{\underline{\sf To\:Find:-}}[/tex]

[tex]\Large{\underline{\sf Formula:-}}[/tex]

[tex]\boxed{\sf Force=Mass\times Acceleration}[/tex]

[tex]\Large{\underline{\sf Solution:-}}[/tex]

[tex]\\ \sf\longmapsto Force=4000(35)[/tex]

[tex]\\ \sf\longmapsto Force=14000N[/tex]

==> Take an Earth weight. Don't forget the unit.

==> Multiply it by 0.166 .

==> The product is its Moon weight. Don't forget the unit.

Example:

If I weigh 1,000 lbs on Earth.

Multiply 1,000 lbs by 0.166 .

I weigh 166 lbs on the Moon

The complete table is as follows -

   ITEM                                   W(E)                               W(M)

   Apple                                 150 g                               25 g

   Hammer                            1.5 lbs                             0.25 lbs

   Person                              180 lbs                              30 lbs

   Blue whale                      200 tons                          33.3 tons

We have the force of gravity on the moon is only 16.6% the force of gravity on Earth.

We have to fill the table given in the question.

In physics, gravity is a fundamental interaction which causes mutual attraction between all things with mass or energy. The gravitational force between two bodies of mass 'm' and 'M' separated by a distance 'r' apart is given by -

[tex]$F = \frac{GMm}{r^{2} }[/tex]

According to the question, we have -

Force of gravity on the moon is only 16.6% the force of gravity on Earth.

This means that for an object of mass 'm' -

F(M) = 16.6% of F(E)

This means that a person would weigh six times less on the moon than they do on Earth -

W(moon) = [tex]\frac{1}{6}[/tex] W(earth)

Let's complete the table -

   ITEM                                   W(E)                               W(M)

   Apple                                 150 g                        1/6 x 150 = 25 g

   Hammer                            1.5 lbs                        1/6 x 1.5 = 0.25 lbs

   Person                              180 lbs                       1/6 x 180 = 30 lbs

   Blue whale                      200 tons                     1/6 x 200 =  33.3 tons

Hence, the complete table is given above.

To learn more about Gravity on moon, visit the link below -

https://brainly.com/question/20045391

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