## This is the best answer for What constant acceleration, in SI units, must a car have to go from zero to 60mph in 10 s?

v = at so a = v/t

t = 10 s

v = 60 mph = 26.82 ms^-1

a = (26.82 ms^-1) / (10 s) = 2.682 ms^-2

So the car is accelerating at 2.7 ms^-2.

And as distance = speed x time

distance = 26.82 ms^-1 x 10 s = 268.2 m

So the car has travelled 270 m in ten seconds.

Assuming that g = 9.8 ms^-2, then the fraction of g is a / g = (2.682 ms^-2) / (9.8 ms^-2) = 0.274.

That is, the car is accelerating at 27% of g.