Can you solve these physics riddles? ft Simone Giertz - Part 1/3

Hi Dianna.  Thanks for putting these videos together.  I'm in my 40s now and always loved physics.  I used to get A+ grades in my physics classes and I always found it to be the most interesting subject I took in high school and university.  Despite that, the more I age the more I forget!  It's great to see your enthusiasm for the subject and to get constant refresher snippets for me.  Even though most of your videos remind me of how much I have forgotton, I still love to learn more about physics!

Keep up the good work, and I look forward to your future videos.

Sincerely,
Jason