Answered: Given: The intial position of the ball…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Write an explanation or narration about the given problem why the problem got these answers shown in the photos. Narrate the solution in the given picture below. The narration must include the following parts:

1. Dissect the problem by explaining the illustration

2. Identify the given variables and the required ones

3. Explain the solution

4. Double check the solution by explaining why the values makes sense or using another way to verify the answer.

Problem: (The answer to this question is in the given picture)

A rolling ball moves from x1 = 3.4 cm to X2 = -4.2 cm during the time from t; = 3.0 s to t2 = 6.1 s. What is its average velocity? Ans. 0.78 cm/s

Given:
The intial position of the ball is 3.4 cm.
The final position of the ball is -4.2 cm.
The time interval is tj = 3 s to t2= 6.1 s.
Step 2
Calculation:
The average velocity of the object is equal
to the ratio of total displacement and
total time taken by the object.
Write the expression for the average
velocity of the ball.
Ax
Vニ
At
X2-X1
t2-t1
Here, v is the average velocity, Ax is the
change in position, and At is the time
interval.
Substitute, all known values in the above
expression.
-4.2 cm-3.4 cm
6.1 s-3.0 s
-7.6
3.1
=-2. 4516 cm/s
Thus, the average velocity of the ball is
-2.4516 cm/s.

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