1 Answer

Joesdiner · Answer 1 · 2021-09-02T07:15:35+0000

Answer:

648 J

Step-by-step explanation:

The kinetic energy of an object can be found by using the formula

$k = (1)/(2) m {v}^(2) \\$

m is the mass

v is the velocity

From the question we have

$k = (1)/(2) * 9 * {12}^(2) \\ = (1)/(2) * 9 * 144 \\ = 9 * 72 \: \: \: \: \: \: \: \: \: \: \:$

We have the final answer as

Hope this helps you