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A driver traveling at 39.2 m/s spots a cop are and
hits the break. If he is able to brake for 2.1 seconds
and he accelerates at a rate of -7.6 m/s?, what is
his final speed?

Respuesta :

Answer:

23.24 m/s

Explanation:

2.1 s  *  (-7.6 m/s^2) = -  15.96 m/s   from original speed

39.2 - 15.96 = 23.24 m/s

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