Throwing an object in a moving car

  • #1

Main Question or Discussion Point

is there an equation to describe object thrown from backseat to dashboard, in a sedan going 80 down the freeway
as compared to object thrown same distance outside of stationary vehicle?
 
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Answers and Replies

  • #2
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Try googling for "Galilean relativity", that will get you started.

The concept is pretty simple: if both objects are thrown with speed ##V## and cover a distance ##D## (so spend time ##T=D/V## in flight) according to the person doing the throwing, and for simplicity both throws happen at the same time, street guy will say that the car object was thrown with speed ##80+V##; car guy will say that the street object was thrown with speed ##80-V##. Both will agree that the object spent the same amount of time in flight, and distance=speed*time will get the distance traveled and the position of both objects at any moment according to either of them.
 

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