Homework Help: physics

Posted by lib on Monday, October 15, 2012 at 9:46pm.

A man claims he can safely hold on to a 11.90 kg child in a head-on collision with a relative speed of 117. mi/h lasting for 0.140 s as long as he has his seat belt on.
(a) Find the magnitude of the average force needed to hold onto the child.

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