Answer:
If KE = 0, the pendulum is not moving. At the top of the swing, the pendulum must stop for a brief moment.
Explanation:
I think this picture is very helpful
The situation is an exponential growth wherein an example is on population when as the population gets larger, it grows more quickly.
If the food is limited to the squirrels then that could impact how well they reproduce which could impact their numbers which therefore could impact the food source for the foxes which eat them. Fewer squirrels means the foxes will slow down on their reproductive numbers as well...they are all linked!