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Movie Miss Physics Hancock
17
Real World Perspective
This means that Michel was hurtling
toward the Earth more than twice as fast as the fastest street legal car in the world.
Applying Variables
y
Vf^2=113^2+2(-9.81)(-7620)
Vf^2=113+(-74752.2)~Vf^2=-74639.2
Vf^2=Vi^2+2a
√Vf^2=√-74639.2~ Vf=275m/s
275m/s= 615.2 mph
Variables
- Will Smith whose 6'2 and around 200lbs is more than a head length taller than Michel (bully).
- Since an average males head is about 10 inches I concluded that Michel is around 5'4 and 120lbs.
- In the scene we see Hancock throw the boy well over cloud level meaning that he reached the stratosphere.
- The throw and fall lasted about for 23 seconds. Since the stratosphere reaches 25,000 ft I decided to use 5 miles as the height the boy reaches.
- Since the boy was almost instantly gone within 1 meter I calculated that his initial speed was around 113 m/s or 250mph.
Movie Miss-Physics
Free Fall
Free fall is the downward motion caused by
the force of gravity upon an object. Objects fall toward the Earth at an acceleration of 9.81m/s^2. In this specific scene we watch Hancock throw an average teenage boy into the stratosphere. Then we watch the boy hurtle to the Earth after being in the sky for 23 seconds, safely into Hancock's arms.
By: Donathan Washington
Real World Perspective
Lets compare this to a space shuttle. While in certain altitudes space shuttles travel at consistent speeds from 190mph to 330mph. Meaning that Michel is still falling 300mph faster than a traveling space shuttle in certain altitudes.
Conclusion
Due to Newton's third law to every action there is always an equal and opposite reaction. Meaning that if Hancock would've caught Michel realistically he'd either have to be falling at her exact speed. Or create a crater in the Earth from all of the excess force that was used to stop her, because energy cannot be destroyed or just poof away. The leftover energy would have had to be transferred somewhere else but the scene does not support this at all.
Hancock
In the clip from the movie Hancock, I will show
you why Hancock wouldn't be able to catch Michel safely. The key physics concepts that exist in this clip and presentation are free fall, gravity, and momentum.