At the electromagnetics lab, your computer analyzes the track left behind by an electron in your lab. The computer analysis reveals that the electron's position on the xx axis is well approximated by the function
x
x
x(t)=t3−7t2+10tx(t)=t3−7t2+10t
x
x
for the time interval starting at 0 μμs and ending at 5 μμs. Note that the time variable in the formula is assumed to be in μμs and the distance unit is assumed to be a centimeter. [The CAPA abbreviation for the 'micro' symbol 'μμ' is the letter 'u'. You would enter microseconds as 'us' and centimeters as 'cm'.]
6.6. At what times was the electron changing its direction of motion (either from forward to backward or from backward to forward)? [Enter the earlier time in the first answer box and the later time in the second answer box. To use units of microseconds enter 'us'.]
Earlier time =
Later time =
What was the average velocity of the electron during the time interval between the times it came to rest?
vavg=