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Snowcat [4.5K]
3 years ago
9

Speed, Velocity or Acceleration?

SAT
1 answer:
qaws [65]3 years ago
5 0

Answer:

Acceleration

Explanation:

Speed is how fast something moves.

Velocity is how fast it moves and in what direction it moves in.

Acceleration is the change in how fast it moves. I.e. if it speed up or slows down.

Here we are not given a speed, but are told that the subway car slows down (a negative change in speed), which is a change in speed, therefore it is acceleration (or more accurately deceleration as it is negative acceleration, slowing down, but acceleration is usually used to describe both.)

Hope this helped!

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Decide whether the sentence needs a "personal a" or not. ¿entiendes ___ las palabras de tu profesora? the "personal a" is necess
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In the sentence given, the "personal a" is:

Not necessary

So the complete sentence is:

¿Entiendes las palabras de tu profesora?

<h3>What is the "personal a"?</h3>

This is Spanish grammar exercise. The "personal a" is an "a" that precedes a specific person or a person that is used as a direct object.

In the sentence given, the "a" is not used because the direct object is "las palabras" which means "the words" and it is not a person.

For example:

  • Adoro a mi mamá.
  • Le llegó una carta a mi vecina.

Check more information about Spanish grammar here brainly.com/question/5495832

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2 years ago
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Based on current birth and death rates, by 2050 Europe’s population will be larger than it is today. Please select the best answ
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Answer:

True is the correct answer.

Explanation:

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3 years ago
How to add maths??? teacher gave question me to!:
Law Incorporation [45]

Answer:

The answer is 4

Explanation:

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3 years ago
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Which of the following offers students a group of courses to be taught over a couple of years?
Nikolay [14]
IB does this. The IB plans out a students high school courses over at least 2 years. Trust me, I'm in it! Hope that helps!
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A researcher selects a sample from a district such that 25% of the children are between ages 5 and 6, 25% are between ages 7 and
Llana [10]

Answer:

Quota.

Explanation:

In Statistics, sampling can be defined as a process used to collect or select data (objects, observations, or individuals) from a larger statistical population using specific procedures.

There are various types of sampling used by researchers and these are;

1. Random sampling.

2. Systematic sampling.

3. Stratified sampling.

4. Cluster sampling.

5. Opportunity or convenience sampling.

6. Quota sampling.

Quota sampling can be defined as a non-probability sampling technique wherein a sample comprising of data from a population or homogeneous group are created.

In this scenario, a researcher selects a sample from a district such that 25% of the children are between ages 5 and 6, 25% are between ages 7 and 8, 25% are between 9 and 10, and 25% are between ages 11 and 12. Thus, the researcher is employing a quota sampling.

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