Avg force on car during crash test?

Thread starter IDKPhysics101
Start date Oct 24, 2010
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Car Crash Force Test

AI Thread Summary

The discussion calculates the average force exerted on a car during a crash test. A car with a mass of 746.9 kg collides with a wall, initially traveling at 36.8 m/s and recoiling at -20.8 m/s. The average force is determined using the formula F * t = change in momentum, with the collision duration being 0.85 seconds. The calculated average force is 50,613 N. This confirms the accuracy of the force calculation based on the given parameters.

Oct 24, 2010

IDKPhysics101

In a crash test a car with mass 746.9 kg collides with a wall and recoils backwards. The velocity of the car before the collision is 36.8 m/s and the velocity after the collision is -20.8 m/s. What is the average force (in N) on the car if the collision lasted for 0.85 sec?

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Oct 25, 2010

IDKPhysics101

50613.45n?

Oct 25, 2010

venkatg

Yes correct!

F * t = change in momentum = m(v1 + v2)

F * 0.85 = 746.9 * 57.6

So F = 50613N

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