A leaf falls from a tree from a height of 20 m. Assuming no air resistance, how
long will it take for the leaf to hit the
ground?

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

A58-kg boy swings a baseball bat, which causes a 0.140-kg baseball to move toward third base with a velocity of 38.0 m/s.