Answer:
<h2>2500 J</h2>
Explanation:
The average kinetic energy can be found by using the formula

m is the mass
v is the velocity
From the question we have

We have the final answer is
<h3>2500 J</h3>
Hope this helps you
Average velocity is the change in distance divided by the time it takes to travel that distance. so the first one.
If you are in plato the answer is B.