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

Answers

Answer 1

Answer:

14.1m/s

Hope it helps

Have a great day

A One Kilogram Stone, Falling Freely Form A Height Of 10 M , Strikes The Ground With A Velocity
Answer 2
y= 0 m
y = 10 m
v0 = 0 m/s
a = g = -9.8 m/s²

y= y0 + v0t + 1/2 * at²
0 = y = 10 + 0 + 1/2 * -9.8t²
-10 = -4.9t²
t² = 2.0408
t = 1.429 s

v = v0 + at
v = 0 – 9.8 * 1.429
v = – 14 m/s
Velocity of 14 m/s

Related Questions

write the value of g on the moon and Jupiter​

Answers

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

Circle the letter of each sentence that is a scientific question
a. At what temperature does water boil?
b. When does the sun rise on April 3?
c. How can my team work better together?
d. Why does she like science more than he does?

Answers

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

What is the acceleration of the car in initial 2 seconds [ans:20m/s^2

Answers

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

Which statement describes the distribution of charge in an atom?

O A neutral nucleus is surrounded by one or more negatively charged electrons.

O A positively charged nucleus is surrounded by one or more negatively charged electrons.

O A neutral nucleus is surrounded by one or more positively charged electrons.

O A positively charged nucleus is surrounded by one or more positively charged electrons.​

Answers

Answer:

hope this helps

Explanation:

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

If the density of a liquid is 20gcm - 3 height is 4cm and gravitational field strength is 10 N kg, the pressure of the liquid is ​

Answers

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]

How many significant figures are in each number?
.0054
78.0
09002
.993

Answers

Answer:

0.0054 » two significant figures.

78.0 » three significant figures.

0.09002 » four significant figures.

0.993 » three significant figures.

Explanation:

[tex].[/tex]

hey plz solve this question I will mark as the brillianest plzzzzzzzzzzzzzzzzzzzz

Answers

Explanation:

I hope it helped U

stay safe stay happy

What happens to the weight of an object when it is taken from Earth to the Moon? why ?​

Answers

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:

Hopefully it is helpful...


what describes an objects speed and direction

Answers

Answer:

Velocity

Explanation:

hope this helps

Answer:

Speed in a given direction is called velocity.

Explanation:

An ambulance is currently traveling at 15m/s, and is accelerating with a constant acceleration of 5 m/s^2. The ambulance is attempting to pass a car that is moving at a constant velocity of 30m/s. How far must the ambulance travel until it matches the car’s velocity?

Answers

initial velocity=15m/s=uAcceleration=a=5m/s^2Final velocity=v=30m/sDistance be s

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]

I need chapter one section three

Answers

Chapter one section three of what?
Is it a book or a poem? If so just comment

What will be the gravitational force between the bodies if the mass of each is doubled and the distance between them is halved?​

Answers

Explanation:

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

Does anyone have any clue on how to do this??

Answers

Get serious !

It's (length) • (width) • (height) .

the density of silver at 0°C is 10310 kg/m^3 and the coefficient of linear expansion is 0.000019/°C . calculate its density at 100°C ?

Answers

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

You have 50L of water, it froze. So find its new volume. Density of water is 1000kg/m^3 or 1kg/L, density of ice is 920kg/m^3 or 0.92kg/L.

Answers

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)

on the way to school the bus speeds from 20 m/s to 36 m/s in 4 seconds. what distance does the bus cover in this time frame

Answers

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

A car starting from rest accelerated at a rate of 0 .5 m/s up to 2 km what would be the final velocity of the car and how much time would it take to cover 1.6​​

Answers

Initial velocity=u=0m/sAcceleration=a=0.5m/s^2Distance=s=1.6mFinal velocity=v=?

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)

a 4,000 kilogram rocket has accelerates at a rate of 35 m/s2. How much force is required to do this?​

Answers

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

Mass=4000kgAcceleration=35m/s^2

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

Force

[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]

5) Two knights are jousting on horseback. It takes 2.2 seconds for the knights to meet in the middle
of the course and collide. If one knights horse ran at 6m/s and the other's horse at 9m/s, then
how far apart must they have been begin with?

Answers

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

1) Calculate average speed (in meters/sec) if a golf cart runs 140 meters in 10 seconds
2) Calculate the average speed in km/hr of Charlie who runs to the store 4km away in 30 mins
3)calculate the distance in km that Charlie runs if he maintains the average speed from question 2 for 1 hour
4) a bicycle rider travels 50.0km in 2.5 hours. What is the cyclists average speed?
5)what is the average speed ( in mph) of the car that traveled a total of 200 miles in 5.5 hours

Answers

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

The force of gravity on the moon is only 16.6% the force of gravity on Earth. For each item listed in the table below, fill in what its weight would be on the moon?

Answers

==> 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.

Define Gravity in Physics.

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

#SPJ2

Use the list to answer the question.
potassium, Group 1
calcium, Group 2
iodine, Group 17
neon, Group 18
Which two elements in the list would bond together based on their ionic charges?(1 point)

potassium and neon

potassium and iodine

calcium and neon

calcium and potassium

Answers

Answer:

potassium and iodine

Explanation:

If a taxi cab travels 45.8 m/s for 146 s, how far did it travel?
Your Answer:

Answers

Answer:

6.68 km

Explanation:

distance = speedxtime

45.8 x 146

6686.6 m

An element has six valence electrons. Which ionic charge will its ion carry?(1 point)

2–

2+

6+

6–

Answers

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

Forgot how to do this please help

Answers

1) -76.27
2)-119.47
3)-256.27
4)-87.07
Here’s the formula for the last one so you know how to do it. Hope this helps!!!

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

what will happen to the gravitational force between two bodies if the distance between them is halved keeping their masses constant
help me​

Answers

Answer:

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

If a person walks forwards five meters but then moves back one meter,
what is their displacement?

Answers

The answer is 4 :0 :0

Answer:

4

Explanation:

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

Write the values of the 9s in 402,999

Answers

Answer:

nine hundred ninety nine

Explanation:

/h/ /t/ /o/

9. 9. 9

Compare and contrast scientific inquiry "skill and process".

Answers

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.

PLEASE HELP DUE IN ALMOST AN HOUR PLEASE

Answers

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

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