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vi = 50 m/s
vf = 10 m/s
t = 4 s
a = ?
d = ?
Calculamos la aceleración.
a = (vf - vi)/t
a = (10 m/s - 50 m/s) / 4s
a = (- 40 m/s)/ 4s
a = - 10 m/s²
Calculamos distancia.
d = (vf + vi)/2 * t
d = (10 m/s + 50 m/s)/2 * 4s
d = (60 m/s)/2 * 4s
d = 30 m/s * 4s
d = 120 m