I was watching "Casino Royale" with my friends yesterday, and there was a part where a commercial plane was about to land, but it seems that its runway was being obstructed, so it suddenly took off again. I am under the impression that it's not possible for a commercial airplane to takeoff when it is landing. I understand that in order for a plane to takeoff, its thrust must sufficiently large enough so that the lift force overcomes the weight. Since the commercial aircraft is so heavy, wouldn't it require a huge amount of thrust change? If this thrust change takes place in such a short time (the plane barely make contact with the ground before it takes off in the movie), wouldn't the passenger feel too much jerk and pass out or something? Thanks in advance for your help.