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# instructions: Write your responses to the following questions from chapters 1-4. Each response *must* be comprised of complete sentences only and must form a complete thought. There is no minimum...

instructions: Write your responses to the following questions from chapters 1-4. Each response *must* be comprised of complete sentences only and must form a complete thought. There is no minimum length requirement.

You *must* cite the source. The format here is loose as in a link or book title or merely saying “from our lecture” will suffice depending on the source. Do *not* plagiarize. Quote sources instead. Rewriting an idea is still stealing an idea and I would rather you quote the source than rewrite the idea.

Point breakdown per question:

2 points for complete sentences/thoughts

2 points for content

1 point for citation of source

Due date: September 9, 2019

1. What makes scientific explanations different from other explanations?
2. Why does physics (and other sciences) use mathematics to describe phenomena? Specifically, why are numbers and data better (the ball traveled 50 mph) than words (the ball traveled very fast)?
3. Primarily, physics I is the science that describes motion. What three quantities do physicists use to discuss motion and what are their definitions?
4. What is the difference between average and instantaneous velocity or acceleration?
5. Why does a horizontally thrown object hit the ground at the same time as a dropped object?
6. You throw a ball straight up into the air and it comes back down. At the peak of its motion, what is the ball’s velocity and acceleration? Are they the same? Are they different? Why?
7. What does it mean for an object to be “at rest”? Can a moving object be “at rest”? Why or why not?
8. If you know all the forces acting on an object, is it possible to determine its motion? How?
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## Solution

Rajeswari answered on Sep 07 2021
44211 answe
1. What makes scientific explanations different from other explanations?
Scientific explanation uses observations and measurements for explanation and also what is existing is the topic i.e. natural things happening will be explained. Also the explanation will be logical, and depends on evidence.
Other explanations need not be about natural occu
ences but may include perceptions, imaginations or stories, etc. Also explanation need not depend on evidence or logical. Egs are explanation for poems.
2. Why does physics (and other sciences) use mathematics to describe phenomena? Specifically, why are numbers and data better (the ball traveled 50 mph) than words (the ball traveled very fast)?
Relative terms will not be used in Physics. Specifically defined things would be included. Just vague things as the force acted very vigorously Physics would explain in numerical terms the magnitude of the force so that comparison with other things would be easier. Always specific numbers denoting any measurement or range of values would be used instead of vague terms.
3. Primarily, physics I is the science that describes motion. What three quantities do physicists use to discuss motion and what are their definitions?
In physics, we mean motion only when there is a change of position. i.e. only when there is a change from the initial position to final position, there is motion. In Science motion is defined in terms of displacement, speed, or velocity with direction or...
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