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a biker is riding with a speed of 15 m/s. A dog runs out in front of the biker, who slams on the brakes and comes to a stop 2 seconds later. what distance did the biker travel before coming to a stop?

Respuesta :

AL2006
The biker slowed from 15 m/s to zero.
His AVERAGE speed during that time was 7.5 m/s .

Rolling for 2 s at an average speed of 7.5 m/s,
he covered   (2 s) (7.5 m/s) = 15 m.

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