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Physics (ASAP PLEASE)

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Please, help me answer this question.

Two balls are moving in the same direction. Ball A has half the mass of ball B, and is moving at twice its speed.
(a) Which ball has the greater momentum?
(b) Which ball has greater kinetic energy?

Thank you

  • Physics (ASAP PLEASE) -

    momentum is mass*velocity

    momentumA=M/2*2V=MV
    momentumB=MV

    they have the same momentum
    KE=1/2 m v^2
    KEA=1/2 m/2*(2v)^2=mv^2
    KEB=1/2 m *v^2=1/2 mv^2

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