Answer:
630,000 J
Explanation:
The kinetic energy of an object can be found by using the formula
[tex]k = \frac{1}{2} m {v}^{2} \\[/tex]
m is the mass
v is the velocity
From the question we have
[tex]k = \frac{1}{2} \times 1400 \times {30}^{2} \\ = 700 \times 900 \\ = 630000[/tex]
We have the final answer as
630,000 J
Hope this helps you
