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AP® Physics 1 & 2

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Moderate

Finding the Speed of a Relativistic Banana Peel

APPH12-F77WSJ

A stationary hitchhiker watches a car fly by at a speed of $0.3c$, where $c$ is the speed of light. Someone in the car leans out the window and throws a banana peel forward, in the same direction the car is moving, at a speed of $0.2c$ relative to the car.

What is the speed of the banana peel as observed by the hitchhiker?

A

$0.5c$

B

$0.1c$

C

$0.47c$

D

$0.094c$