Acceleration = (change in speed) / (time for the change)
= (76.8 mi/hr) / (7.62 sec)
= 10.08 mile/hour-second
That quantity is a perfectly good acceleration, it has the right
dimensions etc, but the question asks for it in units of meter/s²,
so I have to convert it to the equivalent in meter/s².
(10.8 mile / hr-sec) x (1,609 meter/mile) x (1 hr / 3600 sec)
= (10.8 · 1,609 · 1) / (3,600) meter / second²
= 4.83 meter / second² if you round all the numbers as you go
or
4.51 meter/sec² if you use a calculator and don't round anything
<span>When an atom undergoes decay its nucleus becomes unstable because it does not have a balance of neurons and protons. This means the atoms try to find a confirmation in which it is stable. In doing so, it is possible that the atom changes its element, and it frees a huge amount of energy in order to balance itself. This is the base of radioactivity.</span>
ISOTOPES (C) are atoms with the same number of protons, but different numbers of neutrons.
:)
<span>♥B. There was no single medium of exchange.♥
Take a look at the saying </span><span>"Not worth a Continental".
It referrers to the fact that </span><span>currency issued by the Continental Congress was usually just a promise to pay.
Leaving your answer with ♥B♥</span>
