Cameron H. answered • 06/25/19

Math Tutor: Calculus I & II, Algebra, Trigonometry, Geometry, etc.

First we can write out what we have been given.

v_{0} = 25 m/s

a = -8 m/s^{2}

v_{f} = 0

Then helpful equations

v_{f} = v_{0 }+ a*t

d = ((v_{f} + v_{0})/2)*t

Use this first equation to solve for the time just by plugging in the other variables.

The second equation only works for constant acceleration.