Why is atp an example of chemical potential energy?
a it stores energy until a cell needs it.
b it creates and destroys energy
c it assembles mitochondria
d it drives reactions to make glucose

The right answer is A. It stores energy until a cell needs it.

ATP is a ribose-linked adenine molecule that is attached to a chain of three phosphate groups.

The mechanism is the transfer of a phosphate group to another molecule and the ATP then becomes adenosine diphophate (ADP).

But a cell has very little ATP. And as it consumes permamently, it must constantly manufacture (synthesize) and it is including cellular respiration that provides the energy necessary for the manufacture of ATP by allowing phosphorylation (addition of a phosphate to the ADP).

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.