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Los datos que te dan son:
vi = 75 m/s
vf = 25 m/s
t = 8 s
a = ?
e = ?
Calculamos la aceleración
a = (vf - vi)/t
a = (25 m/s - 75 m/s)/8s
a = (- 50 m/s)/8s
a = - 6,25 m/s²
Respuesta.
a = - 6,25 m/s²
Calculamos el espacio recorrido
e = (vf + vi)/2 * t
e = (25 m/s + 75 m/s)/2 * 8s
e = (100 m/s)/2 * 8s
e = 50 m * 8
e = 400 m
Respuesta
e = 400 m
Vf = 25m/s
t = 8s
a=?
e =?
Aceleración
Vf = Vo - a×t
75m/s = 25m/s- a× 8s 75m/s-25m/s = - a×8s
50m/s /- 8s = a
a = - 6.25m/s²
espacio recorrido
e = (Vo + Vf) t/2
e = (75m/s+25m/s)8s/2
e = 100m/s ×4s
e = 400m