Answer:
observation
Explanation: you observe something then create a question and a hypotesis
Solids- wood, sand, brick, rock
Liquids- water, milk, blood, coffee
Gases- air, helium, nitrogen, hydrogen
Answer:
<h2>78.13 J</h2>
Explanation:
The kinetic energy of an object 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 as
<h3>78.13 J</h3>
Hope this helps you
Answer:
the answer is helium but more of then but for now use helium