- #1
klubo
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Hi, sorry if this is posted someplace else - I couldn't find a search function.
I want to know the force of impact of a Porsche 911 impacting a standing pedestrian at 95 mph.
I understand that F=m*a
But what I don't get is this: acceleration is measured here in mph. But the impact occurs over an instant of time. Doesn't that affect the calculation?
Here's my equation, in which I'm trying to move toward foot-pounds of force - (is that the direction I should be headed?):
I realize this is basic stuff but I've managed to confuse myself anyway. Thanks for any help you can give me here -
Bill
I want to know the force of impact of a Porsche 911 impacting a standing pedestrian at 95 mph.
I understand that F=m*a
But what I don't get is this: acceleration is measured here in mph. But the impact occurs over an instant of time. Doesn't that affect the calculation?
Here's my equation, in which I'm trying to move toward foot-pounds of force - (is that the direction I should be headed?):
Porsche 2940 lbs
Fuel 8 lbs more or less
Passenger 183 lbs
Luggage 18 lbs more or less
Total Weight 3149 lbs
Force = Mass x Acceleration
In this case the acceleration is equal to the speed of the vehicle since the pedestrian was traveling at zero miles per hour.
So the Porsche was traveling at 95 mph, which equals 501,600 feet per hour, 8,360 feet per minute, 139.33 feet per second
I realize this is basic stuff but I've managed to confuse myself anyway. Thanks for any help you can give me here -
Bill