- #1
Can You Explain: Why Is It One Sec?
- Context: Undergrad
- Thread starter AyoubEd
- Start date
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- Tags
- Fluids Thermodynamcics
Click For Summary
Discussion Overview
The discussion centers around the concept of "per second" in relation to momentum and force, exploring the definitions and relationships between these physical quantities. It includes technical explanations and mathematical reasoning.
Discussion Character
- Technical explanation
- Mathematical reasoning
Main Points Raised
- One participant clarifies that "per second" indicates a rate, not simply "one second."
- Another participant presents the formula for momentum as mass multiplied by velocity and relates momentum per second to mass, velocity, and time.
- A different participant defines force as the change in momentum per unit time and provides the equation F=ma, linking acceleration to the change in velocity over time.
- Participants engage in a mathematical breakdown of the relationship between force, mass, acceleration, and momentum.
Areas of Agreement / Disagreement
The discussion does not appear to reach a consensus, as participants present different aspects of the relationship between momentum, force, and time without resolving any disagreements.
Contextual Notes
Some assumptions about the definitions of momentum and force are present, but these are not explicitly stated. The discussion relies on the interpretation of physical quantities and their relationships.
- #2
CWatters
Science Advisor
Homework Helper
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Firstly it doesn't say "one second" it says "per second" which is a rate.
Momentum = mass * velocity
so
Momentum per second would be equal to mass * velocity / time
Velocity/time = acceleration.
can you do the rest?
Momentum = mass * velocity
so
Momentum per second would be equal to mass * velocity / time
Velocity/time = acceleration.
can you do the rest?
- #3
NihalRi
- 134
- 12
Force is the change in momentum per unit time.
F=ma (m=mass a=acceleration)
a= (vf-vi)/t
Replacing a into the force equation:
F=m (vf-vi)/t
Which is change in momentum per unit time.
F=ma (m=mass a=acceleration)
a= (vf-vi)/t
Replacing a into the force equation:
F=m (vf-vi)/t
Which is change in momentum per unit time.
- #4
AyoubEd
- 10
- 2
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