We have that the best estimate for the mass of a typical lineman on a high school football team is

From the options
1. 100,000 g
2. 100,000 kg
3. 100,000 mg
Generally
A Typical lineman cannot be as small as

A Typical linesman cannot be as massive as
as that is unrealistic
With the Average Mass of A Typical linesman can be

In conclusion
The best estimate for the mass of a typical lineman on a high school football team is

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Temperature is measured with a thermometer
Energy at top = U = mgh = 40 * 9.8 * 12 = 4704 J
Energy at bottom = 1/2 mv² = 1/2 * 40 * 10² = 4000 / 2 = 2000 J
Energy Lost = Final - Initial = 4704 - 2000 = 2704 J
In short, Your Answer would be 2704 Joules
Hope this helps!
It’s to push an object in it’s direction of where it’s leading to.
Density because any object that is more dense than water (density of 1. I forget the units) sinks, and any object less dense than water floats.