Why does the central air blow out low force of air that isn't that cold and then it trips the breaker?

I first guess would be something is blocking the fan/ blower motor. The filter could've been pulled into the blower fan and restricting the air flow causing the fan to pull to many amps and trip the breaker. The air coming through the duct at a room temperature could be the heaters in the air handler is coming on. First verify the outdoor unit is operating. Tron