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Question
does a person standing motionless in the aisle of a moving bus have kinetic energy from the perspective of an observer standing on the road? multiple choice yes, relative to the earths surface the person has velocity yes, but kinetic energy does not always require motion. no, kinetic energy requires a velocity. no, the person is not moving.
Kinetic energy is given by the formula $K = \frac{1}{2}mv^{2}$, where $m$ is mass and $v$ is velocity. From the perspective of an observer on the road, the person in the moving bus is moving with the velocity of the bus relative to the Earth's surface. So, the person has a non - zero velocity and thus has kinetic energy.
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A. Yes, relative to the earth’s surface the person has velocity