Question

A frog leaps vertically into the air and encounters no appreciable air resistance.

Answer 1

I am pretty sure that the correct answer is C. On the way up, on the way down, and at the highest point its acceleration is 9.8downward. I consider this one to be the right one because  the frog is always goes downward due to  constantly accelerating of gravity. If frog jumps, the upward velocity will be reduced because of force of gravity. Hope everything is clear!