1) It so happened that a flea was on a dog traveling in a cart led by a horse traveling a road at 25 km/h East. If the flea was traveling 3 km/h East and the dog at 9 km/h West, what would the relative velocity of a sandwich thrown by the flea at 5 km/h West relative to the horse & cart?
2) A skydiver jumps out of a plane. After three seconds, she opens her parachute. How far below the plane was she when she opened up her parachute?
3) A skydiver free falls from a plane. After three seconds, she opens her parachute. What was her downward velocity when she opened her parachute?
4) Defying physics: (start drawing) a box hangs motionless in the air whereupon 4 forces act upon it simultaneously: 45N (pushing down South); 15N (pushing up to North), 10N (pushing to East) with 35N (pushing West). Determine the net force with direction applied on the box.
5) If you travelled 75km in 45 min, what was your average speed in m/s?