ASRS 1809415

I the instructor was to take Person X for a refresher flight as he was said to have previously held a Private Pilot certificate. Upon start up and taxi, Person X took questionable action to attempt to start the airplane as well as try to steer the Cessna 152 by use of yolk as if it were a steering wheel. After discussing with Person X that I would be in control of the aircraft and would use positive exchange of controls, I was solely controlling the aircraft while Person X viewed from the left seat. As I positioned the aircraft on Runway XX I advanced power to takeoff and talked through the procedure for Person X to listen. Halfway down the runway, Person X (without permission) positioned his hands on the controls of the aircraft and held the airplane in a position that I was unable to rotate, after several shouts "LET GO, LET GO, LET GO NOW", my only final action to recover control was to strike Person X to release the controls as we did not have sufficient runway to abort the takeoff. I was able to regain control and climbout to the East where I took time to regroup and kept Person X off the controls. We returned to the airport and discussed the situation. Person X is not welcome to come back for another flight as I find him unfit and dangerous for flight.