1) Ball A was carried to the top of a hill in a straight line,
while ball B was carried in a longer, zigzag path. At the top of
the hill, both balls were left at rest. A student draws a graph
that depicts each ball's final potential energy. Which statement
describes the final potential energy of the balls?
Ball A has more potential energy.
Both balls have equal potential energy.
Ball B has more potential energy.
Neither ball has any potential energy.
2)A ball falls from a shelf. Assuming there is no friction, why
is the conservation of mechanical energy independent of mass?
Mass is eliminated when equating elastic potential energy with
kinetic energy.
Mass is eliminated when equating gravitational potential energy
with kinetic energy.
The displacement of the ball is insignificant compared with
Earth's size.
The mass of the ball is insignificant compared with the mass of
Earth.