Anything less dense than water will float, like oil. Anything more dense than water will sink, like rock.
Data:
h = 2m
m = 45 Kg
PE = ? (Joule)
Adopting, gravity (g) ≈ <span>9,8 m/s²
</span>
Formula:

Solving:



Answer:
<span>
The sled's potential energy is 882 Joules</span>
The object is at rest is the answer.
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