Two identical cars are traveling at the same speed. One is headingdue east and t

Question

Two identical cars are traveling at the same speed. One is headingdue east and the other due north, as the drawing shows. Whichstatement is true regarding the kinetic energies and momenta of thecars? They have the same kinetic energies, butdifferent momenta. They have different kinetic energies anddifferent momenta.   
Theyhave different kinetic energies, but the same momenta.Theyhave the same kinetic energies and the same momenta. They have the same kinetic energies, butdifferent momenta. They have different kinetic energies anddifferent momenta.   
Theyhave different kinetic energies, but the same momenta.Theyhave the same kinetic energies and the same momenta. They have the same kinetic energies, butdifferent momenta. They have different kinetic energies anddifferent momenta.   
Theyhave different kinetic energies, but the same momenta.Theyhave the same kinetic energies and the same momenta. They have the same kinetic energies, butdifferent momenta. They have different kinetic energies anddifferent momenta.   
Theyhave different kinetic energies, but the same momenta.Theyhave the same kinetic energies and the same momenta.

Explanation / Answer

They both have the same kinetic energy since kinetic energy isa scalar quantity so direction does not matter and the mass andvelocity is the same. However, their momenta is different since they are each goingin different directions. When calculating momentum,directions must be taken into account. It is the first answer Hope that helps

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