Question

If the swing is moving from W to Z, at which point is her kinetic energy increasing and her potential energy decreasing? (based on a starting point of W)

W
X
Y
Z

Answer 1

X — in fact anywhere while she’s descending from W toward the lowest point Y (so at X). As she goes down, gravitational potential energy is converted to kinetic energy, so PE falls and KE rises until the bottom.