Answer:
The answer is
7,840,000 J
Explanation:
The kinetic energy KE of an object given it's mass and velocity can be found by using the formula
[tex]KE = \frac{1}{2} m {v}^{2} \\ [/tex]
where
m is the mass
v is the velocity
From the question
m = 20000kg
v = 28 m/s
It's kinetic energy is
[tex]KE = \frac{1}{2} \times 20000 \times {28}^{2} \\ = 10000 \times 784[/tex]
We have the final answer as
7,840,000 J
Hope this helps you
