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Sagot :
P.E= Mass x gravity x height (standard gravity = 10m/s approaximately)
= 200x10x10= 20000j (D)
= 200x10x10= 20000j (D)
Answer: d. 20000 J
Explanation:
Potential energy is the energy possessed by an object by virtue of its position.
[tex]P.E=m\times g\times h[/tex]
m= mass of object = 200 kg
g = acceleration due to gravity = [tex]10ms^{-2}[/tex]
h = height of an object
1. when h= 10 m
[tex]P.E=200\times 10ms^{-2}\times 10m=20000Joules[/tex]
2. when h= 0 m
[tex]P.E=200\times 10ms^{-2}\times 0m=0Joules[/tex]
Thus change in energy=(20000-0)Joules=20000Joules.
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