PPT: Work and Energy | Science Olympiad Class 9 PDF Download

 Page 1


Work and Energy
Page 2


Work and Energy
There is a difference in the way we use the
term ‘work’ in day-to-day life and the way
we use it in science.
Page 3


Work and Energy
There is a difference in the way we use the
term ‘work’ in day-to-day life and the way
we use it in science.
Pushing a rock with all your strength does
not count as work if it does not move.
Page 4


Work and Energy
There is a difference in the way we use the
term ‘work’ in day-to-day life and the way
we use it in science.
Pushing a rock with all your strength does
not count as work if it does not move.
Climbing stairs count as work because you
are moving yourself and going against
gravity.
Page 5


Work and Energy
There is a difference in the way we use the
term ‘work’ in day-to-day life and the way
we use it in science.
Pushing a rock with all your strength does
not count as work if it does not move.
Climbing stairs count as work because you
are moving yourself and going against
gravity.
In the world of science, we can not base
our explanations on perception.
All the words must be properly defined
using clear terms and parameters for
which all agree.