The cosmological argument for the existence of god intellectually follows cause-and-effect back in time -- in effect asking "where did the big bang come from? " -- and concludes that there must be a singular, initial cause for the universe. aristotle called this cause

First uncaused cause

Explanation:

Aristotle states that an infinite regression in the principle of causality is not possible. If the regression were infinite, then there would never be a first cause (mover), since this would need another mover to start its motion. Therefore, according to Aristotle, there must be an unmoved mover that moves other things, but is not itself moved by any prior action,

the total distance traveled by the car is

30km + 49km = 79 km .

a.   mass number from atomic number