senglish
Oct 12, 2018

Designing and testing parachutes. A lesson in gravity and air resistance.

8 comments

 

 

 

senglish
Oct 12, 2018

 

 

senglish
Oct 12, 2018

 

 

senglish
Oct 12, 2018

 

 

senglish
Oct 12, 2018

 

 

senglish
Oct 12, 2018

 

 

senglish
Oct 12, 2018

 

 

senglish
Oct 12, 2018

 

 

senglish
Oct 12, 2018