Physics
posted by Jason .
Comicstrip hero Superman meets an asteroid in outer space, and hurls it at 750 m/s, as fast as a bullet. The asteroid is three thousand times more massive than Superman. In the strip, Superman is seen at rest after the throw. Taking physics into account, what would be his recoil velocity?

Physics 
drwls
His momentum would have to equal that of the asteroid, but in the opposite direction. That would require that
V(superman) = 3000*750 m/s = 2.25*10^6 m/s
which is about 1% of the speed of light. 
Physics 
Jason
Where do you get 10^6 m/s?
So is the answer 22.5 or 225,000,000 
Physics 
drwls
No, it is neither of those two numbers you wrote.
It is what it is.
Do the multiplication.
Respond to this Question
Similar Questions

physics
As a science project, you drop a watermelon off the top of the Empire State Building, 320 m above the sidewalk. It so happens that Superman flies by at the instant you release the watermelon. Superman is headed straight down with a … 
physics
It is well known that bullets and other missiles fired at Superman simply bounce off his chest. Suppose that a gangster sprays Superman's chest with 8 g bullets at the rate of 105 bullets/min, the speed of each bullet being 450 m/s. … 
pop
If superman in space throws a boulder with 10 times as much mass as himself, and the boulder leaves his hands at 100 m/s, how fast does superman recoil? 
principles of physics
7. If superman in space throws a boulder with 10 times as much mass as himself, and the boulder leaves his hands at 100 m/s, how fast does superman recoil? 
physics
in a bizzare but harmless accident, superman fell from the top of the eiffel tower. how fast was superman traveling when he hit the ground 7.80 seconds after falling 
Physics
It is well known that bullets and other missiles fired at Superman simply bounce off his chest. Suppose that a gangster sprays Superman's chest with 8 g bullets at the rate of 110 bullets/min, the speed of each bullet being 550 m/s. … 
Physics
It is well known that bullets fired at Superman simply bounce off his chest. Suppose that a gangster sprays Superman's chest with bullets of mass m = 2.6 g at a rate of R = 140 bullets/min. The speed of each bullet is v = 510 m/s. … 
Physics
Superman rushes to save Lois Lane, who has fallen (has been pushed? 
Physics
02. Comicstrip hero Superman meets an asteroid in outer space and hurls it at 800 m/s, as fast as a bullet. The asteroid is a thousand times more massive than Superman, yet in the comic strip, he remains stationary after releasing … 
Physics
We commonly see Superman being shot and bullets bounce off of him. Suppose Mr. Bad shoots Superman with 4.00 kg bullets at a rate of 100 bullets/min for 9.00 s. If the speed of each bullet is 480.00 m/s and rebounds straight back with …