Why Does My Quadratic Equation Not Solve in This Momentum Problem?

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The discussion revolves around a momentum problem where the user is struggling to solve a quadratic equation derived from momentum and kinetic energy equations. The user has substituted values into the equations but ends up with an unsolvable quadratic equation. Key equations mentioned include the momentum equation m*u = m1*v1 + m2*v2 and the kinetic energy equation Ek = 1/2*m1*v1^2 + 1/2*m2*v2^2. The user seeks advice on resolving the quadratic equation and understanding the substitution of values. Clarifying the correct values and ensuring accurate substitutions are crucial for solving the problem effectively.
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Homework Statement


See attached image


Homework Equations


Momentum equations.
Kinetic energy equations.

The Attempt at a Solution


I attempted to write out the momentum equation and the kinetic energy equation and tried to resolve the two equations (which became a quadratic) but I keep getting a false equation from my calculator

m*u = m1*v1 + m2*v2
Ek = 1/2*m1*v1^2 + 1/2*m2*v2^2

I substituted the values in and it resulted in a unsolvable quadratic equation.
Any tips guys?
 

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What did you put in this value ?
m*u
 
m*u = 54.77
 
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