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Brakes are applied on a car moving at a speed of 80km/h, and stops in 40m. ¿How many meters had it moved in the instant its velocity fell to: a) 50km/h b) 25km/h c) ¿How long did it take to stop?
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|dw:1320958882857:dw| just plug in for all values and you'll be fine. v final is not zero, you need to find v final but everything else is given. you need to find time by using x=vi(t). to find acceleration.
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