Ball rolling down a ramp, illustration - Stock Image - C057/1055

Illustration of a ball on a ramp, changing colour to show the relationship between potential energy and kinetic energy. At the start the ball is stationary on the ground and has neither potential nor kinetic energy, and is grey. RUSSELL KIGHTLEY/SCIENCE PHOTO LIBRARY

35 Rolling Ball Up Hill Stock Photos, High-Res Pictures, and Images - Getty Images

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35 Rolling Ball Up Hill Stock Photos, High-Res Pictures, and Images - Getty Images

70+ Ball Rolling Down Stock Illustrations, Royalty-Free Vector Graphics & Clip Art - iStock

Rolling Without Slipping Down an Incline - Sphere, Disk, and Ring on a Ramp Using Forces and Torque

70+ Ball Rolling Down Stock Illustrations, Royalty-Free Vector Graphics & Clip Art - iStock

Ball Accelerating - Stock Image - C017/3913 - Science Photo Library

Rolling Without Slipping Down an Incline - Sphere, Disk, and Ring on a Ramp Using Forces and Torque

300+ Ball Rolling Down Stock Photos, Pictures & Royalty-Free Images - iStock