SaraElle
SaraElle
08-10-2018
Physics
contestada
Please help i need this fast!!! like right now!!
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JasonZhu
JasonZhu
08-10-2018
4.a)
vi = 72km/h
vf = 18km/h
t = 15s
a = ?
vf = vi + at
(18) = (72) + a(15)
-54 = a(15)
-3.6 m/s^2 = a
b)
a = (vf - vi)/t
(-3.6) = (0 - 72)/t
20s = t
5. I don't see what it's asking specifically, it's just a statement.
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