Question

A toddler is on a playground swing. When she is all the way on the right, then ...
her tangential acceleration is maximal to the right.
her kinetic energy is maximal.
her tangential acceleration is maximal to the left.
her tangential acceleration is zero.
her velocity is maximal to the right.
none of the above is true.

Answer 1

Her kinetic energy and velocity are zero at that time.
Tangential acceleration is maximum and pointed left, but it also has a downward comonent.

I believe the best answer is none of the above, but the teacher may prefer the second choice. The question is poorly worded in my opinion.

Answer 2

her tangential acceleration is maximal to the left

I know this is definitely the answer, but I am not sure about the theory behind it.