Solve for elapsed time

[DrD]

Thanks, for the very helpful information, Road! Using exact(value) is the key to success, here. (Good catch on that ...!) In my case, even though [CAS] [Exact] checkbox was checked, I see, (now), that it says it only affects the "Returned" values.

(I wonder why it doesn't work, more generally?)

[CAS]

Code:


vi:=exact(18.51_(m/s));
d:=exact(79.8_(m));
a:=exact(11.17_(m/s^2));

USIMPLIFY(solve(d = (vi*t+(1/2)*a*t^2),t));
t = {−5.78_(s), 2.47_(s)}

-Dale-