Oh so would I use d=vt-1/2at^2 with a =.86m/s^2
d=1.3 x 1.5 - .5 x .86 x 1.5^2
d=1.95-.97= .98 and just chalk the .02 difference to rounding or am I still doing something wrong?
I solved a and b fine, I just don't know where to start c
a) i=Ft i=change in p and p=mv so i=90=45v so v=2m/s
b) same thing just using the other mass i=90=70v so v=1.3m/s
c) v=d/t so 1.3=d/1.5 but that would be d=1.95 and the answer key says d=.96m