Part A

A person is in a crouch, with their knees bent. They then straighten their legs, pushing off the ground to leap into the air. If we say that their vertical position is $y=0$ at the instant they leave the ground, what can you say about their vertical position when they are crouched, with their knees bent?

$y>0$

$y=0$

$y<mn\; id="EditorElement\_168687">0</mn>$