physics
posted by lisa .
f a pronghorn antelope accelerates from rest in a straight line with a constant acceleration of 1.5 m/s2 , how long does it take for the antelope to reach a speed of 20 m/s?

Given
Vi = 0 m/s {rest}
a = 1.5 m/s^2
Vf = 20 m/s
Vf = Vi + at
t = Vf/a
Vi cancels out
** Plug in and you should get the speed as 13.3 s