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A 91.0-kg fullback running east with a speed of 5.20 m/s is tackled by a 95.0-kg...

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Physics

A 91.0-kg fullback running east with a speed of 5.20 m/s istackled by a 95.0-kg opponent running north with a speed of 3.00m/s.

(a) Explain why the successful tackle constitutes a perfectlyinelastic collision.



(b) Calculate the velocity of the players immediately after thetackle.

magnitude    m/s
direction    ° north of east


(c) Determine the mechanical energy that disappears as a result ofthe collision.
J

(d) Account for the missing energy.

Answer & Explanation Solved by verified expert
3.7 Ratings (528 Votes)
There are two reasons First momentum is always conserved in a closed system which for all practical purposes we can assume this example is Secondly momentum is a vector whereas KE is not we can use the direction and magnitude of the players original momenta to figure out how fast theyll be moving    See Answer
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