What is the difference between impact force and impulse?

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The discussion revolves around the concepts of impact force and impulse, particularly in the context of a tennis ball being dropped onto a balance. Participants are exploring the definitions and relationships between these two physical quantities.

Discussion Character

  • Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • The original poster seeks to understand the difference between impact force and impulse, presenting a scenario involving a tennis ball. Some participants provide definitions and mathematical relationships, while others explore the implications of these concepts in the context of the scenario.

Discussion Status

Participants are actively discussing the definitions and mathematical formulations related to impact force and impulse. Some guidance has been offered regarding the relationship between impulse and momentum, but there is no explicit consensus on the original poster's question.

Contextual Notes

The discussion includes references to Newton's second law and the application of force over time, indicating a focus on the underlying physics principles. The original poster's repeated question suggests a need for further clarification on the topic.

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A tennis ball is dropped from a certain height onto the top pan of the balance measure?
A.Weight of the ball.
B.Impact force on the pan due to the ball.
C.Impulse on the pan due to the ball.

Actually, what is the difference between impact force and impluse, thanks.
 
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The impulse of a force is the force multiplied by the time over which it is applied. If an impulse is applied to an object, the impulse is equal to the change in momentum of the object.
 
fork said:
A tennis ball is dropped from a certain height onto the top pan of the balance measure?
A.Weight of the ball.
B.Impact force on the pan due to the ball.
C.Impulse on the pan due to the ball.

Actually, what is the difference between impact force and impluse,

Newton's second law can be stated in the following ways:

[tex]F = dp/dt = d(mv)/dt = mdv/dt = ma[/tex]

Think of the tennis ball hitting the ground and coming to a complete stop. The force is:

[tex]F = dp/dt = \frac{0 - mv}{\Delta t}[/tex]

The quantity:
[tex]F\Delta t = \Delta p = m\Delta v[/tex]

is called the impulse: a force applied for a certain time interval. It is equal to the change in momentum of the mass to which the force is applied.

Does that help you answer the questions?

AM
 
O, i get it, so the ans is B.
 

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