Correct: A ball thrown into the air, An elevator moving between floors, Water droplets falling from a tap, Jumping on a trampoline, Airplane in level flight, A roller coaster descending from a peak, Bouncing a basketball, A rocket taking off, A skydiver descending during free fall, A tree branch swaying in the wind, Incorrect: car traveling on a straight road, projectile fired horizontally, train moving on a level track, person walking in a straight line, Raindrops falling from the sky, Rolling ball on a flat surface, Skater gliding on ice, Boat sailing on calm water, Toy car rolling on a tabletop, Cyclist riding on a flat road, Pendulum swinging back and forth, Bullet fired from a gun, Hockey puck sliding on ice,

Objects moving vertically

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