CHEMISTRY MIDDLE SCHOOL

Which part of an object's rate of change best defines acceleration?velocity

force

speed

position

Answers

Answer 1

Answer:

Answer:

Velocity

Explanation:

The change of velocity rate it's the definition of acceleration.

While increasing or decreasing velocity, it means that an acceleration it's happening.

Using some math:

$a=(dv)/(dt)$

This can be read as "the acceleration it's equal to te variation of velocity with respect to time"

Related Questions

According to scientific evidence, earth’s earliest atmosphere lacked oxygen. Over time, oxygen was added to the atmosphere.Which statements explain how this change occurred and how it affected life on earth?Choose all answers that are correct.A.The addition of oxygen to the earth's atmosphere helped make possible the development of eukaryotic organisms, which need oxygen to carry out many of their life processes.B.When cyanobacteria evolved, they carried out photosynthesis. Oxygen is a product of photosynthesis. The addition of oxygen to earth’s atmosphere helped make possible the development of eukaryotic organisms, which need oxygen to carry out many of their life processes.C.The addition of oxygen to the earth's atmosphere helped make possible the development of prokaryotic organisms, which need oxygen to carry out many of their life processes.D.When cyanobacteria evolved, they carried out photosynthesis. Oxygen is needed to carry out photosynthesis.
below left is a cylinder containing water. an ball with a mass of 21g and a volume of 15 cm3 is lowered into the water. sketch the object and the new water level in the cylinder on the right.
Combine the words volume and meniscus in one sentence.PLEASE HELP... need within 20 min. THANKS!!!
why does the amount of energy received from a small light source decrease as the distance from the light source increase
What moderates the temperature on Earth ? A. cities B. deserts C. the oceans D. mountainous areas

if a gas occupies at 5.40 L at a pressure of 1.25atm, what will be its volume at a pressure of 3.00 atm? (Show work)

Answers

Answer:

Explanation:

Givens

P = 1.25 atm

V = 5.4 L

P1 = 3 atm

V1 = ??

Formula

The basic formula is P*V = P1 * V1

Solution

1.25 * 5.4 = 3 * V1

6.75 = 3*V1

6.75 /3 = 3*V1/3

2.25 = V1

Which of the following is a element water,oxygen, carbon dioxide ammonia

Answers

If you look on the periodic table, you'll find that oxygen is an element. You can also find out by looking up how each formula is written. Oxygen - O | Carbon Dioxide - CO2 | Water - H2O | Ammonia - NH3. An element has only one capital letter. Oxygen is the only one which falls under that category.

Answer:oxygen

Explanation:

Which of the following is an example of a double replacement reaction? (a)3Fe + 2O2 Fe3O4
(b) BaCl2 + K2CO3 BaCO3 + 2KCl
(c) NiCO3 NiO + CO2
(d) Cl2 + 2NaBr 2NaCl + Br2

Answers

Answer: The correct answer is Option b.

Explanation:

Double displacement reactions are defined as the reactions in which exchange of ions takes place.

$AB+CD\rightarrow CB+AD$

For the given options:

Option a: $3Fe+2O_2\rightarrow Fe_3O_4$

This is an example of synthesis reaction.

Option b: $BaCl_2+K_2CO_3\rightarrow BaCO_3+2KCl$

This is an example of double displacement reaction.

Option c: $NiCO_3\rightarrow NiO+CO_2$

This is an example of decomposition reaction.

Option d: $Cl_2+2NaBr\rightarrow 2NaCl+Br_2$

This is an example of single displacement reaction.

From the above information, the correct answer is Option b.

b) is an example of a Double Displacement Reaction:

Ba Cl2 + K2 CO3 ---> Ba CO3 + 2K Cl
A B C D A D B C

You place ice cubes into a glass of lemonade what happens to make the lemonade to get cold

Answers

When we place ice cubes into a glass of lemonade then transfer of thermal energy from lemon water to ice cubes takes place.

What is transfer of energy?

Transfer of energy means the transformation of energy from one form to another form or from one place to another place.

When we place ice cubes into a glass of lemonade, as we know that the temperature of ice cubes is low and it has low thermal energy and the temperature of lemonade is high and have a high thermal energy as compared to ice cubes. In this condition thermal energy goes from lemonade to the ice cube till they both have same thermal energy.

Hence, transfer of thermal energy takes place.

To know about transfer of energy, visit the below link:
brainly.com/question/8724454

The heat energy from the room temperature lemonade transfers to the cold ice cubes, causing the temperature of the lemonade to drop and the temperature of the ice cube to rise until they are equal to each other.

What is true for the energy involved in an explosion?There is more energy at the end of the explosion than there is at the beginning.
There is less energy at the end of the explosion than there is at the beginning.
There is the same amount of energy at the end of the explosion than there is at the beginning.<<<My answer
The amount of energy before and after the explosion depends on the type of reaction.
Can someone please check it?

Answers

The correct answer is this one: "The amount of energy before and after the explosion depends on the type of reaction." The energy involved in an explosion is that the amount of energy before and after the explosion depends on the type of reaction, how strong and how weak; how destructive or less destructive.

Is cell division a form of reproduction? Explain. Why do you think this?