Force is mass times accelaration Question inside

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SUMMARY

The discussion centers on the relationship between force, mass, and acceleration, specifically addressing the misconception that force is zero when an object moves at constant velocity. Kunal Janu clarifies that upon impact, the object experiences deceleration, resulting in a non-zero force being felt. The fundamental equation F = m * a remains valid, as the acceleration changes during the collision. Understanding this principle is crucial for grasping concepts related to momentum and collisions.

PREREQUISITES
  • Newton's Second Law of Motion
  • Basic principles of kinematics
  • Understanding of acceleration and deceleration
  • Concept of momentum in physics
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  • Study the implications of Newton's Second Law in real-world scenarios
  • Explore the concept of momentum and its conservation during collisions
  • Learn about impulse and its relationship to force and time
  • Investigate different types of collisions: elastic and inelastic
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kunal.janu
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HI all

We know that Force = Mass * Acceleration

An object moving at constant velocity will have zero acceleration. So when it impact an object or a person, a force is felt. Equation above suggests that force is zero.

Please explain why this equation fails for this case, and a mathematical formula for deriving the force that is actually felt.

Awaiting answers
Kunal Janu
 
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Thats becasue when you hit something, you decelerate.

The deceleration is generally very high if you hit a brick wall, hence a large force is felt.

Therefore the mathematical formula for the force you feel is...

F=m*a
 
Exactly, when you hit something, your acceleration is no longer zero.

You'll learn more about collisions when you get into momentum.
 

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