Respuesta:
2km = 2000m
15min = 0.25h = 900s
v = x/t
v = 2000m/900m = 2.22m/s
v = 2km/0.25h = 8km/h
4)
3min = 180s
vf = vo + at
vf = 2m/s + (0.6m/s^2)(180s) = 110m/s
5)
at = vf-vo
t = (vf-vo)/a
t = (4m/s - 2m/s)/(0.15m/s^2) = 13.33s
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Respuesta:
2km = 2000m
15min = 0.25h = 900s
v = x/t
v = 2000m/900m = 2.22m/s
v = 2km/0.25h = 8km/h
4)
3min = 180s
vf = vo + at
vf = 2m/s + (0.6m/s^2)(180s) = 110m/s
5)
vf = vo + at
at = vf-vo
t = (vf-vo)/a
t = (4m/s - 2m/s)/(0.15m/s^2) = 13.33s