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Imagine yourself on an ice surface with a rod of metal - pull it in to move forward. Then rotate a 1/2 turn and push it back. Wouldn't you continue?
Try the experiment
Simple "rectilinear motion" cannot result in forward acceleration. For example if you stand on ice and throw a heavy ball forward you will travel backward. Let's say the ball is attached to you with by a rope. The rope will unwind and eventually become taut. It will then exert an equal force and opposite to the force felt by you and it will return as will you to the same exact spot (assuming no friction).
maybe you are not worth effort
People repel concepts with a fear threat reaction. I have only explained simple concepts to people with intelligence to listen.
Maybe being a troll is better than to be like some here
Anyone can replicate the experiment on an ice rink with a partner - different mechanism but could be made the same.
Sophiedon't reply to me and you will be happy.Otherwise seek professional advice on your anger issues.