Newton's III law (action/reaction) question

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Homework Help Overview

The discussion revolves around Newton's Third Law of Motion, specifically in the context of a tennis ball hitting a racket. The original poster presents a three-part question regarding the action and reaction forces involved, their magnitudes, and the reason these forces do not cancel each other out upon contact.

Discussion Character

  • Exploratory, Conceptual clarification

Approaches and Questions Raised

  • The original poster describes the action/reaction forces and confirms their equal magnitudes. However, confusion arises regarding why the forces do not cancel each other out, leading to questions about the concept of inertia.

Discussion Status

Participants have engaged in clarifying the nature of the forces involved, with some confirming the original poster's statements. There is an acknowledgment of the confusion regarding inertia, indicating a productive exploration of the topic.

Contextual Notes

Participants note that the forces act on different objects, which is a critical aspect of understanding why they do not cancel each other out.

soicuw
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Homework Statement


This question has three parts, and i think i have a and b down.

a) Describe the action/reaction of a tennis ball hitting a racket:

b) Are the magnitudes of the forces equal?

c)Why don't the forces cancel each other out upon contact?

Homework Equations




The Attempt at a Solution


a)I said the ball pushes against the racket, the racket pushes against the ball
b)Yes.
c)HERE IS WHERE I'm CONFUSED: My guess is because of inertia, but I'm not really sure what inertia is exactly, could someone tell me if I'm correct?
 
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soicuw said:

Homework Statement


This question has three parts, and i think i have a and b down.

a) Describe the action/reaction of a tennis ball hitting a racket:

b) Are the magnitudes of the forces equal?

c)Why don't the forces cancel each other out upon contact?

Homework Equations




The Attempt at a Solution


a)I said the ball pushes against the racket, the racket pushes against the ball
b)Yes.
c)HERE IS WHERE I'm CONFUSED: My guess is because of inertia, but I'm not really sure what inertia is exactly, could someone tell me if I'm correct?

Each of the forces is exerted on a different object.
 
a)the ball pushes the racket & vice versa.
b)yes.
c)since the two force do not act on same object they do not cancel each other.
 
Oh yeah that makes sense, thanks physics geniuses!
 

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