superheroes 1

The physics of Superheroes Chapter 1 : Superman

Lycée Louis Armand Villefranche sur Saone

History : As described in Superman1, Jor-El, a scientist on Krypton, discovers that his world is about to explode and kill its entire population. Possessing only a small prototype rocket ship, he and his wife elect to save their infant son Kal-El, sending him to Earth.

In his first golden age incarnation, Superman’s powers differed significantly from those we associate with him today. For example, he could lift a car, but not a continent and he could not fly, but simply leap tall buildings in a single bound (about one eighth of mile).

The source of Superman’s powers on Earth was credited to his Kryptonian heritage, specifically the fact that his home planet had a far stronger gravity than Earth.

So, can we really say that Superman is a superheroe ??

Try to show that perhaps, Superman is not a superheroe, but just a strong man from Krypton, using the two examples proposed (he can lift a car, he can leap on the top of the building).

We consider that the Superman’s mass is 220 pounds (100kg) and the gravity on Krypton was fifteen times larger than on Earth. Other Information : An ordinary man on earth can lift about 60 kg, a strong man about 80 kg Earth gravity is g=32 feet.s A mile = 1602 meters, a foot = 30.5cm The weight of a car is 1100 kg

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Need help ? First, you have to explain why Superman can lift a car, it's quite easy ... Then to find if Superman can leap on the top of the building you have to figure out what initial velocity would superman need, lifting off from the sidewalk ? (we will neglect friction). And finally, you have to find the intensity of the force he needs to jump and estimate if it's possible. It is not so easy .... Still need help ?? Find the secret code and you'll get clues .. (4 digits)

Need help ? First, you have to explain why Superman can lift a car, it's quite easy ... Then to find if Superman can leap on the top of the building you have to figure out what initial velocity would superman need, lifting off from the sidewalk ? (we will neglect friction). And finally, you have to find the intensity of the force he needs to jump and estimate if it's possible. It is not so easy .... Still need help ?? Find the secret code and you'll get clues .. (4 digits)

You're wrong try again

Need help ? First, you have to explain why Superman can lift a car, it's quite easy ... Then to find if Superman can leap on the top of the building you have to figure out what initial velocity would superman need, lifting off from the sidewalk ? (we will neglect friction). And finally, you have to find the intensity of the force he needs to jump and estimate if it's possible. It is not so easy .... Still need help ?? Find the secret code and you'll get clues .. (4 digits)

Need help ? First, you have to explain why Superman can lift a car, it's quite easy ... Then to find if Superman can leap on the top of the building you have to figure out what initial velocity would superman need, lifting off from the sidewalk ? (we will neglect friction). And finally, you have to find the intensity of the force he needs to jump and estimate if it's possible. It is not so easy .... Still need help ?? Find the secret code and you'll get clues .. (4 digits)

Need help ? First, you have to explain why Superman can lift a car, it's quite easy ... Then to find if Superman can leap on the top of the building you have to figure out what initial velocity would superman need, lifting off from the sidewalk ? (we will neglect friction). And finally, you have to find the intensity of the force he needs to jump and estimate if it's possible. It is not so easy .... Still need help ?? Find the secret code and you'll get clues .. (4 digits)

Need help ? First, you have to explain why Superman can lift a car, it's quite easy ... Then to find if Superman can leap on the top of the building you have to figure out what initial velocity would superman need, lifting off from the sidewalk ? (we will neglect friction). And finally, you have to find the intensity of the force he needs to jump and estimate if it's possible. It is not so easy .... Still need help ?? Find the secret code and you'll get clues .. (4 digits)

Need help ? First, you have to explain why Superman can lift a car, it's quite easy ... Then to find if Superman can leap on the top of the building you have to figure out what initial velocity would superman need, lifting off from the sidewalk ? (we will neglect friction). And finally, you have to find the intensity of the force he needs to jump and estimate if it's possible. It is not so easy .... Still need help ?? Find the secret code and you'll get clues .. (4 digits)

Need help ? First, you have to explain why Superman can lift a car, it's quite easy ... Then to find if Superman can leap on the top of the building you have to figure out what initial velocity would superman need, lifting off from the sidewalk ? (we will neglect friction). And finally, you have to find the intensity of the force he needs to jump and estimate if it's possible. It is not so easy .... Still need help ?? Find the secret code and you'll get clues .. (4 digits)

Need help ? First, you have to explain why Superman can lift a car, it's quite easy ... Then to find if Superman can leap on the top of the building you have to figure out what initial velocity would superman need, lifting off from the sidewalk ? (we will neglect friction). And finally, you have to find the intensity of the force he needs to jump and estimate if it's possible. It is not so easy .... Still need help ?? Find the secret code and you'll get clues .. (4 digits)

Need help ? First, you have to explain why Superman can lift a car, it's quite easy ... Then to find if Superman can leap on the top of the building you have to figure out what initial velocity would superman need, lifting off from the sidewalk ? (we will neglect friction). And finally, you have to find the intensity of the force he needs to jump and estimate if it's possible. It is not so easy .... Still need help ?? Find the secret code and you'll get clues .. (4 digits)

Need help ? First, you have to explain why Superman can lift a car, it's quite easy ... Then to find if Superman can leap on the top of the building you have to figure out what initial velocity would superman need, lifting off from the sidewalk ? (we will neglect friction). And finally, you have to find the intensity of the force he needs to jump and estimate if it's possible. It is not so easy .... Still need help ?? Find the secret code and you'll get clues .. (4 digits)

To find if Superman can leap on the top of the building you have to figure out what initial velocity would superman need, lifting off from the sidewalk ? (we will neglect friction) .Do you know ? The starting speed and final height are connected v = 2ghIt takes a large force to jump up with a started speed F = maDo you know ? The acceleration a describes the change in velocity divided by time during which speed changes we’ll consider that this time is 0.26 seconds (even if some experts argue that it is less).For the demonstration, we can suppose that the force to jump up is 70 percent larger than the force his legs supply while simply standing still, supporting his weight on Krypton, so you have to figure out the superman’s weight on Krypton. So, what is your conclusion about Superman ?

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AGO

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