A man walks 20 meters to the east, he then walks 20 meters back to the west to lock his car. He walks another 30 meters east to the restaurant. What distance did he walk?

What was his displacement from the car?

3 hours because it is a decent distance.

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.

you didnt put any of the following