Needs help with pressure and work done

AI Thread Summary
When two identical rocks are dropped from different heights, they both exert the same force upon impact due to having the same mass and acceleration. However, the rock dropped from 200 meters will cause more damage upon hitting an object, like a can, because it has greater kinetic energy and momentum. This increased impact is related to the work done during the fall, as the rock from the higher height has more potential energy converted to kinetic energy. The discussion highlights the difference between pressure exerted and the effects of impact, emphasizing the role of height in energy transfer during collisions. Understanding these concepts is crucial in physics, particularly in the study of motion and forces.
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needs help with pressure and work done!

Homework Statement


if a 2 similar rocks are thrown down at different height, one at 100m and 1 at 200m, which one will exert more pressure on the floor?


Homework Equations





The Attempt at a Solution


when i use f=ma, f in both cases are the same as the m and a are the same. since f is the same, pressure should also be the same. however when both rocks hits a can on the ground, the one that is hit by the rock at 200m will get more squash. why? is it because of work done?
 
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it's something related to impulse, momentum, collision... if you have learned these chapters it should be easy enough for you to understand.
 

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