Question

1. sketch a graph that represents the following situation. (2 pts.) a girl parachutes from an airplane, free-falls for a while, opens her chute, slows down, and lands safely on the ground.

Explanation:

The graph plots height (y-axis) vs. time (x-axis):

1. Start at a high, constant height (airplane altitude, flat horizontal segment).
2. First segment: Steep downward curve with increasing slope (free fall, accelerating downward, height decreases faster over time).
3. Second segment: Less steep downward curve that levels to a constant slope (parachute opens, decelerates then reaches constant slow descent, height decreases at a steady, slower rate).
4. Final segment: Flat horizontal line at height = 0 (lands on ground, height stays constant).

Answer:

A correct graph has 4 key segments (left to right):

1. Flat horizontal line at maximum height (waiting to jump/initial airplane altitude).
2. Downward-opening concave curve (free fall, accelerating speed).
3. Shallow, straight downward line (steady slow descent after parachute opens).
4. Flat horizontal line at height = 0 (on the ground).