SCI 110 Week 2 Discussion

SCI 110 Week 2 Discussion | Assignment Help | Strayer University 

"Chapters 2 and 3"

Discussion Option 1:

Newton's 1st Law can be stated as follows- 

An object in motion stays in unchanging motion unless acted on by a net force. And an object at rest will stay at rest unless acted on by a net force.

Our daily experience bears out the second part well. If an apple is sitting on the table, it will keep doing that unless I pick it up. But we generally don't see things that move forever... 

For this discussion option respond to the following:

Let’s say Jill is playing hockey on a frozen lake. She hits the puck with the stick and it slides along the ice.  Answer the following questions:

1. After she hits the puck, will it continue on forever? Why or why not?

2. Name all the forces acting on the hockey puck (after it was hit)

3. Think of three possible ways it would come to a stop- what makes it come to a stop in each case?

4. Respond meaningfully to two students in the discussion thread

Discussion Option 2:

Refer to the section marked “Discussion Questions (Evaluation)” at the back of each of the assigned chapters (Chapters 2 & 3):

1.      For each chapter, pick one of the discussion questions to address. Copy the question into the forum, along with your answer (see example, below). We are looking for a post for each chapter.

2.      Reply to at least two fellow students with a follow-up question, comment, or a different perspective on their discussion questions.

Example Response:

Chapter 2. #101. Consider a ball at rest in the middle of a toy wagon. When the wagon is pulled forward, the ball rolls against the back of the wagon. A friend asks what force pushes the ball to the back of the wagon. Interpret this observation in terms of Newton's first law.

Answer: I'd tell my friend that there is no force applied to the ball. This phenomenon is actually due to the inertia of the ball. Initially, the wagon and the ball are both stationary relative to the ground. In order to get the wagon moving along the ground, a force must be applied to it. The force applied to the wagon but not to the ball. Consistent with Newton's law of inertia, the ball remains stationary relative to the ground. With the wagon moving forward relative to the ground, but the ball remaining stationary relative to the ground, the position of the ball in the wagon shifts to the back.

Example Reply to a Fellow Student

In your explanation, the frame of reference is the ground. Why do you have to relate everything to the ground?