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Response Details:
24.
The answer to your question is yes. Every moving body possess kinetic energy since the formula for kinetic energy is:
KE=(1/2)mv^2
If the body is moving, than v does not equal zero, and thus KE does not equal zero.
You have to be careful of which reference frame you are talking about
though. For example, if I am in a moving car, and I look at the seat
belt, it appears to be stationary to me (and thus I calculate no
kinetic energy), but to an observer on the road, it is moving with a
velocity equal to the car's velocity and (and thus the observer
calculates a non-zero kinetic energy).
Thus, when you are using energy considerations to solve for a
particular quantity (such as height, speed, distance, whatever), you
must be aware of which reference frame you are working in. This is a
matter of definition though, for example you can define the road as
being "stationary" and work within that reference frame. Similarly,
you can define the road as being at a height of zero, so that anything
above the road has potential energy.
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