The nucleus of a large atom splits and two smaller atoms are formed. energy is released in the process. what is the name of this process?

That process is called "nuclear fission".

Nuclear Fission

Explanation:

Nuclear fission reactions are one of the nuclear reactions in which heavier nuclei splits into two or more lighter nuclei. In these reactions, neutrons are released with a large amount of energy.

General equation for nuclear fission reactions is given by:

Nuclear fusion reactions are one of the nuclear reactions in which two or more lighter nuclei combines to form heavier nuclei. In these reactions,   large amount of energy is released.

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

hope this !

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle