Answer:
Rest and motion are the relative terms because they depend on the observer's frame of reference. So if two different observers are not at rest with respect to each other, then they too get different results when they observe the motion or rest of a body.
<span>The mechanical energy is conserved.
I hope this helps, good luck! :)</span>
Answer: Her test trials had a high level of accuracy but a low level of precision.
Explanation:
For the first question, you got them right, for the two you left blank, initial(beginning) velocity: 2 m/s the final velocity is: 12 m/s