TREVOR CLIFFORD PHOTOGRAPHY / SCIENCE PHOTO LIBRARY TREVOR CLIFFORD PHOTOGRAPHY / SCIENCE PHOTO LIBRARY
Acceleration due to gravity. High-speed multiple exposure image showing a ball (dots) accelerating as it free falls from a fixed point. The dots start off closer together but spread out further down the image, showing the velocity (speed) of the ball increases under the influence of gravity as it falls towards the Earth. The acceleration of an object in free fall, in the absence of resistance to its motion, is dependent only on the gravitational field strength (g).
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