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
To calculate the displacement of the diver during the last 0.89 s of the dive, we need to use the formula:
displacement = velocity x time
Given that the velocity of the diver is -8.7 m/s (indicating downward motion) and the time is 0.89 s, we can substitute these values into the formula:
displacement = -8.7 m/s x 0.89 s
Now, we can multiply the velocity and time together:
displacement = -7.743 m
The displacement of the diver during the last 0.89 s of the dive is approximately -7.743 meters. Since the velocity is negative, it indicates that the displacement is in the downward direction.