What happens when a wagon is accelerating downhill is required.
The potential energy decreases and the kinetic energy increases
Potential energy of wagon is
[tex]U=mgh[/tex]
where,
m = Mass of wagon
g = Acceleration due to gravity
h = Vertical height from the base level of the hill
When the wagon is going downhill the height (h) is decreasing this means the potential energy is decreasing.
Kinetic energy is given by
[tex]K=\dfrac{1}{2}mv^2[/tex]
v = Velocity of the wagon
As the wagon is going down its velocity (v) will increase as it will be accelerating due to gravity.
This means the kinetic energy increases.
Hence, the correct statement is The potential energy decreases and the kinetic energy increases.
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