Last Updated：2025/12/20
Sentence
In
the
past,
before
the
widespread
adoption
of
SI
units,
the
work
that
engines
were
capable
of
doing
was
compared
with
the
work
that
horses
could
do
–
hence
the
term
‘horsepower’.
Various
people
came
up
with
various
equivalencies,
but
the
modern
agreed
definition
is
that
1
horsepower
is
746
joules
per
second
or
746
watts.
Quizzes for review
In the past, before the widespread adoption of SI units, the work that engines were capable of doing was compared with the work that horses could do – hence the term ‘horsepower’. Various people came up with various equivalencies, but the modern agreed definition is that 1 horsepower is 746 joules per second or 746 watts.
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