A. He is shy. I read the book so many times.
The force is 5100 N which is accelerating a Ford Mustang. The mass of the car is 1700 kg.
<h3>What is force?</h3>
A force is an influence that can alter an object's motion. A force can modify the velocity of a mass item. Force is calculated in Newton.
In physics, mass is a quantitative measure of inertia, which is a fundamental property of all matter. Mass is measured in kilograms and grams.
The force is given as 5100 N
The acceleration is 3 m/s
The mass is to be calculated
F = ma
m = F / a
m = 5100 / 3
m = 1700 kg
Therefore, the mass of the car is 1700 kg.
To learn more about force, refer to the link:
brainly.com/question/13347047
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According to the research, Dr. Smithe should use naturalistic observation to investigate aggressive preschoolers.
<h3>What are naturalistic observations?</h3>
It is a method used in research and whose basis is to observe the subjects in the place where they live, without the researcher being disturbed in the least.
This allows detailing the behavior of the subjects that we record is what, in fact, the behavior that should happen in their habitat, under those conditions, obtaining real results, without any type of alteration.
Therefore, we can conclude that according to the research, Dr. Smithe should use naturalistic observation to investigate aggressive preschoolers.
Learn more about naturalistic observation here: brainly.com/question/8187021
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