at what rpm does it feel slow? Does the acceleration improves at certain rpm?
As for bearing, is the wheel making humming noise on 50+ kmph speeds? You can check for vibration by lifting the wheel on jack, and spinning the wheel by hand; then touch the car body to feel the vibration. If there is vibration, then you should get the bearing changed. In civic 95, you have to change whole hub; not sure about EK.