Respuesta :

t=0-15.5/-0.392
=39.5m/s

laurawinter1p43zv5
Given:
acceleration a = -0.392 m/s²
initial velocity v = 15.5 m/s
final velocity = v = 0 m/s

Unknown:
time t

Using the same equation: 
[tex]t = \frac{final (v) - initial(v)}{acceleration (a)} = \frac{0 \frac{m}{s} - 15.5 \frac{m}{s}}{-0.392 \frac{m}{s^2} } = \frac{-15.5 \frac{m}{s} }{-0.392 \frac{m}{s^2} } = 39.5 s [/tex]

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