**Question 20**A physics student measures the depth of a deep hole by dropping a rock into the hole. The rock takes 4 seconds to hit the bottom. Assuming \( g = 10 \, \text{m/s}^2 \), the depth of the hole is approximately:A. 20 meters B. 40 meters C. 80 meters D. 120 meters E. 160 meters

Vertical distance travelled by the rock is the height of the hole h=ut+12gt2h=12gt2…

A physics student measures the depth of a deep hole by dropping a rock into the hole. The rock takes 4 seconds to hit the bottom. Assuming g = 10 m/s2, the depth of the hole is approximately: 20 meters A. B. 40 meters C. 80 meters D. 120 meters E. 160 meters

A physics student measures the depth of a deep hole by dropping a rock into the hole. The rock takes 4 seconds to hit the bottom. Assuming g = 10 m/s2, the depth of the hole is approximately: 20 meters A. B. 40 meters C. 80 meters D. 120 meters E. 160 meters

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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