SOLUTION: The collision impact of an automobile varies jointly as its mass and the square of it's speed. Suppose a 2000-lb car traveling at 55mph has a collision impact of 12.3. What is th
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Question 446196: The collision impact of an automobile varies jointly as its mass and the square of it's speed. Suppose a 2000-lb car traveling at 55mph has a collision impact of 12.3. What is the collision impact of the same car at 65mph?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The collision impact of an automobile varies jointly as its mass and the square of it's speed.
i = k*m*s^2
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Solve for "k" using "a 2000-lb car traveling at 55mph has a collision impact of 12.3".
12.3 = k*2000*55^2
k = 12.3/(2000*55^2)
k = 0.000002033
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Equation:
i = 0.000002033*m*s^2
==============================
What is the collision impact of the same car at 65mph?
i = 0.000002033*2000*65^2 = 17.18
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Cheers,
Stan H.
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