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laurenflakes
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Homework Statement
Paleontologists estimate that if a Tyrannosaurus rex were to trip and fall, it would have experienced a net force of approximately 256,700 N acting on its torso when it hit the ground. Assume the torso has a mass of 3710 kg.
(a) Find the magnitude of the torso's upward acceleration as it comes to rest. (For comparison, humans lose consciousness with an acceleration of about 7g.)
(b) Assuming the torso is in free fall for a distance 1.39 m as it falls to the ground, how much time is required for the torso to come to rest once it contacts the ground?
Homework Equations
F = (m)(a)
The Attempt at a Solution
Immediately it appeared to me that by using the equation that states that the sum of the net forces is equal to the mass of the object in kilograms multiplied by the acceleration of the object. I rearranged the equation to solve for acceleration as such:
256700 N / 3710 kg = 69.19 m/s^2
However, this answer is incorrect.. I don't see what I am doing wrong? Help??!? :(