Explanation:
Hello ! Let's solve this!
1-atomic number: the atomic number is the number of protons that the atom has
2-mass number: is the amount of protons plus the amount of neutrons in the atom
3-atomic weight: average of the masses of an atom per 1/12 of the mass of carbon
4-isotope: it is the same element that has the same number of protons but a different number of neutrons
5-natural abundance: measures the amount of isotopes of an element in nature
6-unit of atomic mass: (uma) is a unit that is equivalent to 1/12 of the carbon atom
1) Vf = Vo - gt; Vf = 0 => Vo = gt = 9.8m/s^2 * 1.5s = 14.7 m/s
2) d = Vo*t - gt^2 /2 = 14.7m/s*1.5 - 9.8m/s^2 * (1.5s)^2 / 2 = 11.02 m
Buhrs atomic model differed from ruthofords because it explained that electrons exist in specified energy levels surrounding the nucleus. This means that, Ruthoford believed that electrons can't do very much. However, Buhrs' model showed that electrons are much more powerful than anyone else believes they can be.
Answer:

Explanation:
Acceleration is given by

where
is the change in velocity
is the time interval in which the change in velocity occurs
To find the acceleration at 1 second, we can take the data at t = 1 s and t = 2. We find:


So, the acceleration is
