An automobile with a spring force constant physics problem?
JH asked:
An automobile having a mass of 5000 kg is driven into a brick wall in a safety test. The bumper behaves like a spring of force constant 6.00 106 N/m and compresses 3.18 cm as the car is brought to rest. What was the speed of the car before impact, assuming that no mechanical energy is lost during impact with the wall?
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An automobile having a mass of 5000 kg is driven into a brick wall in a safety test. The bumper behaves like a spring of force constant 6.00 106 N/m and compresses 3.18 cm as the car is brought to rest. What was the speed of the car before impact, assuming that no mechanical energy is lost during impact with the wall?
March 17th, 2010 at 8:04 pm
.5mv² = .5kx²
mv²=kx²
5000v²=(6.00 106)(.0318²)
v² = 5000/ [(6.00 106)(.0318²)]
ok again i see 6.00 106, i don’t know what that value represents, Synthetic