Force is mass times accelaration Question inside

AI Thread Summary
The discussion centers on the confusion regarding the force experienced during an impact when an object is moving at constant velocity, which theoretically suggests zero acceleration and thus zero force. Participants clarify that upon impact, the object decelerates rapidly, resulting in a significant force being felt. The equation F = m*a remains valid, as the acceleration changes during the collision. The conversation also hints at the relationship between force and momentum in collision scenarios. Understanding these dynamics is crucial for grasping the physics of impacts.
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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