Q.19.)A ball is dropped from a height of 100 m
(a) Its potential energy deceases and kinetic energy increases during
the fall
(b) Its potential energy is equal to the kinetic energy just when it
starts falling
(c)The potential energy increases and the kinetic energy decreases
during the fall
(d) total energy becomes zero when it is falling,
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b). it's potential energy is equal to the kinetic energy just when it starts falling
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