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Question
A woodpecker's brain is specially protected from large decelerations by tendon-like attachments inside the skull. While pecking on a tree, the woodpecker's head comes to a stop from an initial velocity of 0.600 m/s in a distance of only 2.00 mm. (a) Find the acceleration in $\textrm{m/s}^2$ and in multiples of $g$ ($g = 9.80 \textrm{ m/s}^2$). (b) Calculate the stopping time. (c) The tendons cradling the brain stretch, making its stopping distance 4.50 mm (greater than the head and, hence, less deceleration of the brain). What is the brain's deceleration, expressed in multiples of $g$?
1. $-90.0 \textrm{ m/s}^2$
$-9.18g$
2. $6.67 \textrm{ ms}$
3. $-4.08g$
Solution Video

# OpenStax College Physics Solution, Chapter 2, Problem 32 (Problems & Exercises) (4:52) Rating

3 votes with an average rating of 5.

## Calculator Screenshots  Video Transcript

Submitted by uzoamakaadimora on Tue, 10/19/2021 - 02:26

where is the E button on the calculator

Submitted by ShaunDychko on Tue, 10/19/2021 - 10:17

Hello, thanks for the question. On my TI-83 calculator the 'E' calls for a press first on the "2nd function" button, then on the "comma" above the number 7. It's usually written as a double 'EE'. Definitely an important button!
All the best,
Shaun