If Michael Jordan has a vertical leap of 1.29 m, then what is his takeoff speed?
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11th
Physics
Motion in a Straight Line
Problems on Equation of Motion
If Michael Jordan has a ver...
PHYSICS
If Michael Jordan has a vertical leap of 1.29m, then what is his hang time (total time to move upwards to the peak and then return to the ground)?
A
2.03s
B
1.03s
C
0.03s
D
1.0s
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CALCULATOR
Enter the know values to find unknown
Acceleration
Distance
Final Velocity
v = u + a*t
Initial Velocity u
m/s
Final Velocity v
m/s
Time t
s
Acceleration a
m/s²
RESET VALUES
ANSWER
Given, acceleration a=−g=−9.8m/s2(minus sign for motion against gravity); final velocity (top most point) is v=0m/s
Vertical distance traveled d=1.29m
If u be the initial velocity, using formula v2−u2=2ad
02−u2=2(−9.8)(1.29)
⟹ u=5.03m/s
If t be the time to peak.
Using v=u+at
0=5.03−(9.8)t
We get t=5.03/9.8=0.513s
So, the hang time will be double of peak time i.e. thang=2×0.513=1.03s
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