- #1
joemama69
- 399
- 0
Homework Statement
During Operation the jack hammer develops on the concrete surface develops a force @ t=0 f=0, @ t=.2, F=90, @ t=.4, F=0. Graph looks like a triangle
To achieve this the 2lb spike S, is fired from rest into the surface @ 200ft/s. Determine the speed of the spike just after rebounding
Homework Equations
mv + E Fdt=mv
The Attempt at a Solution
Well it seems to me that the initial velocity is 0, and the final is 200ft. How do i know the rebound velocity.