A physics student measures the depth of a deep hole by dropping a rock into the hole. The rock takes 5 seconds to hit thebottom. Assuming g = 10 m/s2, the depth of the hole is approximately:%3DA. 25 metersB. 50 metersC.100 metersD. 125 metersE.200 meters

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Description: A physics student measures the depth of a deep hole by dropping a rock into the hole. The rock takes 5 seconds to hit thebottom. Assuming g = 10 m/s2, the depth of the hole is approximately:%3DA. 25 metersB. 50 metersC.100 metersD. 125 metersE.200 m

Initial Velocity = v0 = 0 m/s . . . . (Initially the rock is at rest) Time = t = 5 s Acceleration due to gravity = g = 10 m/s2 Depth = d = ?We have the kinematical equation, (y - y0) = v0t + 12at2 Where (y - y0) is the vertical displacement. Here, we have to calculate the depth of the hole (d) which is nothing but the vertical displacement of the rock (y - y0). d = v0t + 12gt2 . . . . . (a=g) d = 0 +12×10×52 d = 125 meters D. 125 meters

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A physics student measures the depth of a deep hole by dropping a rock into the hole. The rock takes 5 seconds to hit the bottom. Assuming g 10 m/s, the depth of the hole is approximately:

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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Concept explainers

Displacement, Velocity and Acceleration

In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.

Linear Displacement

The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, for example, from side to side or up and down. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Linear displacement is usually measured in millimeters or inches and may be positive or negative.

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A physics student measures the depth of a deep hole by dropping a rock into the hole. The rock takes 5 seconds to hit the
bottom. Assuming g = 10 m/s2, the depth of the hole is approximately:
%3D
A. 25 meters
B. 50 meters
C.
100 meters
D. 125 meters
E.
200 meters

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