Originally Posted by cloak25

explanation says to find acceleration first. once you find acceleration, you can use y=1/2at^2 to find time.

F=ma
a = F/m
a = qE/m = eE/m.
E=V/d and V=Q/C
so, a = eQ/mdC. substituting eQ/mdC for acceleration into d=1/2at^2

answer D.

this is how you solve it using equations, obviously but I just wanted to see if anyone can explain it using physical relationships to gain a better understanding conceptually. milski came the closest though