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bowman81 · M
He has it wrong too....it isn't speed but the sudden stop that kills you.
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James25 · 61-69, M
Yes it is the speed that kills you. If you impact a cement wall at 10 mph it will cause you less harm than impacting that cement wall at 60 MPH where it could kill you.
James25 · 61-69, M
@DrWatson "Newton's second law of motion states that F = ma, or net force is equal to mass times acceleration. A larger net force acting on an object causes a larger acceleration, and objects with larger mass require more force to accelerate. Both the net force acting on an object and the object's mass determine how the object will accelerate."
So if you have a car that accelerates to one mph and hits a cement wall you won't die. But if you have a car that accelerates to 100 mph and you hit a cement wall you will die.
"Newton's Second Law: Force His second law defines a force to be equal to change in momentum (mass times velocity) per change in time."
So whether you describe it as acceleration momentum velocity or speed it is a part of the equation.
So if you have a car that accelerates to one mph and hits a cement wall you won't die. But if you have a car that accelerates to 100 mph and you hit a cement wall you will die.
"Newton's Second Law: Force His second law defines a force to be equal to change in momentum (mass times velocity) per change in time."
So whether you describe it as acceleration momentum velocity or speed it is a part of the equation.
Bellatrix2024 · 22-25
Well, yes, it's the collision with an object of sufficient mass (like a truck) that does the job.