7. A car starting from rest accelerates at 4m/s. If one it travelled 20m in the last second. Wh is the total distance covered by the car?
A. 56.5m
B.60.5m
C. 45,6m. D.70.6m.
8. A car travels equal distance in the same direction with velocities 60km/hrs,20km/hrs.&
10km/hrs, respectively. The average velocity of the car the whole journey of motion is
A. zero B.5 m/s 0.10 m/s D.20 m/s​

An  atom  (ours, not carroll's) consists of a positively charged  nucleus, surrounded by one or more negatively charged particles called  electrons. the positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. most of an atom's mass is in its nucleus; the mass of an electron is only 1/1836 the mass of the lightest nucleus, that of hydrogen. although the nucleus is heavy, it is quite small compared with the overall size of an atom. the radius of a typical atom is around 0.1 to 0.25 nanometres (nm), whereas the radius of a nucleus is about 10-6  nm.  *  if an atom were enlarged to the size of the earth, its nucleus would be only 200 feet in diameter and could easily rest inside a small football stadium.read more on -

Awoodchuck would chuck all the wood he could chuck if a woodchuck could chuck wood.

Sorry i don’t know what to do