Apparently, this user prefers to keep an air of mystery about them.
2 In projectile motion, what does it mean for the motion along the $x$ and $y$ axis to be independent? Feb 4 '13
2 Small car colliding with large truck Feb 16 '13
1 Projectile motion, canon vs cliff Feb 12 '13
1 Resultant vector problem Feb 11 '13
-1 Newton first law of motion, braking suddenly in car Feb 14 '13