If an object is moving at 0 m/s and accelerates to 90 m/s over 8 seconds, what was the object's rate of acceleration?

May 23, 2017

The rate of acceleration is $= 11.25 m {s}^{-} 2$

Explanation:

We apply the equation of motion

$v = u + a t$

The initial velocity is $u = 0 m {s}^{-} 1$

The final velocity is $v = 90 m {s}^{-} 1$

The time is $t = 8 s$

The acceleration is

$a = \frac{v - u}{t} = \frac{90 - 0}{8} = \frac{90}{8} = 11.25 m {s}^{-} 2$