Solve Superman's Recoil Velocity | Physics Problem Explanation

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Superman's recoil velocity will be extremely small compared to the 800 m/s at which he throws the asteroid.
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leehana10
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Homework Statement


Comic-strip 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. In the strip, Superman is seen at rest after the throw. Taking physics into account, what would be his recoil velocity?

What is a recoil velocity and how do I solve this problem? I would highly appreciate your contribution.
 
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welcome to pf!

hi leehana10! welcome to pf! :smile:
leehana10 said:
What is a recoil velocity and how do I solve this problem? I would highly appreciate your contribution.

recoil is what guns (and cannon) used to do …

the gun kicks backward into your shoulder, so as to conserve momentum when the bullet flies forward …

in this case, the question is simply asking for the (ordinary) velocity of Superman (and you should use conservation of momentum) :wink:
 
  • #3
hello leehana10! welcome to Physics forums!

from conservation of momentum, the velocity that superman will have is the recoil velocity of superman.
 

Related to Solve Superman's Recoil Velocity | Physics Problem Explanation

1. What is Superman's recoil velocity and why is it important?

Superman's recoil velocity is the speed at which he is propelled backwards when he uses his super strength to push an object. This is important because it demonstrates the principle of conservation of momentum in physics.

2. How is Superman's recoil velocity calculated?

Superman's recoil velocity is calculated using the equation: v = m1v1/m2, where v is the recoil velocity, m1 is Superman's mass, and v1 is the initial velocity of the object he is pushing. This equation is derived from the principle of conservation of momentum, which states that the total momentum of a system remains constant unless acted upon by an external force.

3. Can Superman's recoil velocity be greater than the initial velocity of the object he is pushing?

Yes, it is possible for Superman's recoil velocity to be greater than the initial velocity of the object he is pushing. This occurs when Superman's mass is significantly smaller than the mass of the object he is pushing, resulting in a larger recoil velocity.

4. How does Superman's recoil velocity affect his super strength?

Superman's recoil velocity does not directly affect his super strength. However, it is a byproduct of his strength and demonstrates the amount of force he is exerting on an object.

5. What other factors can affect Superman's recoil velocity?

In addition to mass and initial velocity, other factors that can affect Superman's recoil velocity include the coefficient of restitution (the bounciness of the objects involved), the angle at which he pushes the object, and air resistance. These factors can alter the final velocity of Superman's recoil.

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