The first has no r , only 0 since it is a straight line.
Answer:
to be safe
Step-by-step explanation:
the further you are the better, because we don't know who have the virus from who don't have it it's better to be 6 feet apart frome each other where ever you go.
In a mechanical system, it is a law that energy should be conserved. In this case, what is the initial energy should be equal to the total energy after the motion happened. We do as follows:
PE(at rest) = KE(during motion) + PE(after motion)
51450 J = KE(during motion) + 32781 J
KE(during motion) = 18669 J