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linebacker and quarterback physics question?

A 110kg linebacker running at 2.0m/s and an 82kg quarterback running at 3.0m/s have a head-on collision in midair. The linebacker grabs and holds onto the quarterback.

Who ends up moving forward after they collide?

The quarterback or the linebacker

2 Answers

  • 1 decade ago
    Favorite Answer

    Without going through detailed calculation, the quarterback has the larger momentum: 246 kg-m/s as compared to the linebacker's 220.0 kg-mg/s.

    Obviously, the quarterback ends moving forward after the collision, since he's got a larger momentum.

    Hope this helps.

    teddy boy

  • 1 decade ago

    I'm not going to tell you the answer, but I will tell you a little bit about the physics behind it, specifically the law of conservation of momentum.

    Momentum =mass*velocity

    When two objects collide, no momentum is lost. With that understanding, we can equate the momentums into a formula:

    momentum1+momentum2= momentum3

    momentum three represents the two linebackers holding onto eachother. you know their total mass, so all you have to solve for is their velocity.

    Source(s): I am a mechanical engineer for a large company.
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