Yeah because the effect of time would be dilated. Think about this. You are driving in a straight line but suddenly your leg gets dilated significantly into the past while the rest of you accelerates into the future.

What do you think will happen to your leg? There's no forces exerting on it because it's the same force, the motion of the car going forward. But yet if the leg was in the past and the rest of you in the future it would be as if it were sheared off because it wouldn't share the same momentum you share due to the shift in its own relative time.