Answer:
Potential energy of the object will be equal to mgh
Explanation:
Let the mass of the object is m
Acceleration due to gravity is 
Let the object is released from height h
We have to find the potential energy
Potential energy is of an object released from height h is equal to
, here m is mass, g is acceleration due to gravity and h is height from which object is released.
Answer:
The trains mass in pounds would be 40084.029 if you would round it to the hundreths
Explanation:
It would be helpful if you can provide the chart or any additional information about the what Selma made. Anyhow, as I've searched on the internet, the answer is - Switch the stages "Evaluate the solution" and "Design a solution."