you have the joke wrong .
Peristalsis moves food in one direction.
Peristalsis moves food in one direction.
velocity
Trajectory
The motion created is, 1 plate moves in one direction, while the second plate moves in the opposite direction.
Inverse relationship
refraction
It moves in the direction of the force acting on it.
the cold water moves down.
it moves hot to cold.
Due to Newton's 3rd law of motion the astronaut would move in the opposite direction unless he/she is braced against something.
yes .. the wind moves in counterclockwise direction in the NORTHERN HEMISPHERE..