Physics

Problem

Scooter A of mass

80\,\text{kg}

moves at

36\,\text{km/h}

, while scooter B of mass

60\,\text{kg}

moves at

54\,\text{km/h}

. Which statement about their kinetic energies is correct? a) Scooter B has greater kinetic energy; the ratio

\text{B} : \text{A}

9:8

. b) Scooter A has greater kinetic energy; the ratio

\text{A} : \text{B}

4:3

. c) Scooter B has greater kinetic energy; the ratio

\text{B} : \text{A}

27:16

. d) Scooter B has greater kinetic energy; the ratio

\text{B} : \text{A}

9:4