What is the kinetic energy of a 9 kg object moving at 7/4 m/s?

Feb 13, 2016

$13.78125 J$

Explanation:

We can us the formula:

$E = \frac{1}{2} m {v}^{2}$, where $m = 9 k g$ and $v = \frac{7}{4} m {s}^{-} 1$

If we put this into the formula we get:

$E = \frac{1}{2} \left(9\right) {\left(\frac{7}{4}\right)}^{2} = \frac{9}{2} \frac{49}{16} = \frac{441}{32} J = 13.78125 J$