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Originally posted by Illustronic
If the chickens were to jump higher than the trucks walls, they would then be outside of the truck and the truck would speed on from underneath them.
That's only because of air friction, on the moon in a truck bed traveling 20 mph you can jump as high as just short of orbiting the moon and still land on the truck bed when you return because there is no air friction to change your lateral motion, until you get so high the orbital motion of the moon defeats the motion the truck sent you in. If you jump high enough your trajectory would be influenced by the strongest gravitational object and that would become the moon, unless you jumped fast enough to reach the moon's gravitational escape velocity, then the earth's gravity would take over until you breached the earth's escape velocity then the sun would take you, the galaxy next, and so on.
I would attach a tether to myself and the truck if I plan to get home for dinner later.
Originally posted by SirMike
Originally posted by chrismartin38
I often wonder things like this, i used to wonder if i threw a peanut or a feather in the air in a fast moving car or plane why doesnt it smash into the back of the car or plane...or a lift falling, if you jump at the last moment do you survive, i remember mythbusters doing something about that...its all gravity i guess
relative velocities - say it with me.