Asked by Anonymous
A 20 kg object falls from a height of 30 meters. The amount of kinetic energy that the object will have just before it hits the ground is ______ joules.
Answers
Answered by
MathMate
Assuming no air resistance, the kinetic energy gained equals the potential energy lost, namely
PE=KE=mgh
m=20 kg
g=9.8 m/s²
h=30 m
therefore
KE=mgh=?
PE=KE=mgh
m=20 kg
g=9.8 m/s²
h=30 m
therefore
KE=mgh=?
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