Paleontologists estimate that if a Tyrannosaurus rex were to trip and fall, it w

Question

Paleontologists estimate that if a Tyrannosaurus rex were to trip and fall, it would have experienced a force of approximately 260,000 { m N} acting on its torso when it hit the ground.

A: Assuming the torso has a mass of 3800 { m kg}, find the magnitude of the torso's upward acceleration as it comes to rest. (For comparison, humans lose consciousness with an acceleration of about 7 g.)
Express your answer using two significant figures. a=___m/s squared

B: Assuming the torso is in free fall for a distance of 1.47 m as it falls to the ground, how much time is required for the torso to come to rest once it contacts the ground?
Express your answer using two significant figures. Change (t)=____s

***I got part A, which is 59. Anyone able to help with part B? This questions was asked and answered previously but the solution to part B was incorrect.

Explanation / Answer

I see you got part A already, so here is part B

Part B)

We need the speed it had as it hit the ground

Apply vf2 = vo2 + 2ad

vf2 = 0 + 2(9.8)(1.47)

vf = 5.4 m/s

Now use that for the stopping information

vf = vo + at

0 = 5.4 + 59(t)

t = .092 sec

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.