ESSE 1010 Lecture Notes - Seismic Hazard, Linear Elasticity, Shear Force

• School: York University
• Department: Earth, Space Science and Engineering
• Course: ESSE 1010
• Professor: Gary Jarvis

Document Summary

Impact craters: dominant geological activity on earth for the first 600 million years, knowledge based on, explosion craters, labatory experiments, earth"s force of gravity accelerates meteoroids towards earth as they apporach. If you apply a force to a moving object, you cause a change in its velocity an acceleration: to double the acceleration rate, you need to double the force. If the mass of the object were doubled, you would need to double the force to produce the same accelerations rate. Isaac newtown summarized these ideas with the equation: force = mass x acceleration, f = m a. 2: f = m* g, g = gm/r2 g = gm/r2. Forces are different f does not = f* but. Gravitational acceleration, g, is the same in both cases. True for all small masses attracted to the earth. All masses accelerate towards the centre of earth at the same rate.