Linear Kinetics

I need help especially with Question 3. particularly 1. and 2. in bold [shading unweighting and marking the minimum point during countermovement (full squat depth)]. But all other labeling would be appreciated also.

Part I. Identifying and Labelling Common Vertical GRF Graphs

Using the graphs below, label the following for each graph:

Question 1.Walking (1pt)

1. heel contact
2. midstance
3. toe-off
4. loading of body weight (peak)
5. push off (peak)

Question 2.Running (1pt)

1. heel contact
2. toe-off
3. impact transient (peak)
4. push off (peak)

Question 3.Jumping (2pts)

1. Shade the "unweighting", "breaking", and "propulsive" phases using different colors/styles.
2. Mark the minimum point during countermovement (full squat depth).
3. Mark toe-off.
4. Circle the time the person is in flight.
5. place a dashed line across the graph where body weight occurs.