/sci/ - Science & Math

>>14716052
>Why

>put each pill behind a piece of paper so you can't see it
>put nothing behind two pieces of paper
>six pieces of paper
>set up two monty hall set-ups, with the empties in the center
>first one act like you are going to pick the rightmost paper, but reveal the empty one and switch
>second one act like you are going to pick the leftmost one, but reveal the empty one and switch

You now have a 66.7 % chance of picking red blue

The velocity of a particle is given by v=4-3t cms^-1. if the particle is 5cm from the origin after 2 seconds, find the displacement after 7s

I know the answer is -42.5, and I would know how to do it if the particle started at the origin, but I do not know how to do it because it starts 5cm away after s seconds, could someone please explain.
Any help would be much appreciated

:o