posted by veronica .
The velocity of a diver just before hitting the water is -8.7 m/s, where the minus sign indicates that her motion is directly downward. What is her displacement during the last 0.89 s of the dive?
0.89 s earlier, her speed was less by
9.8 m/s^2*0.89 s = 8.72 m/s.
That means it was zero then.
The distance she covered in the last 0.89 s was the total distance,
Vaverage*0.89 s = 3.9 meters