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

2,400+ Ball Rolling Stock Illustrations, Royalty-Free Vector Graphics & Clip Art - iStock

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

Energy conversion, illustration - Stock Image - C050/7492 - Science Photo Library

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

Target shoot: Ball on ramp, conservation of energy – Lee Trampleasure's Blog

517 Ball Rolling Down Royalty-Free Images, Stock Photos & Pictures

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

517 Ball Rolling Down Royalty-Free Images, Stock Photos & Pictures

517 Ball Rolling Down Royalty-Free Images, Stock Photos & Pictures

Ball Falling - Stock Image - C022/1896 - Science Photo Library

517 Ball Rolling Down Royalty-Free Images, Stock Photos & Pictures

Rolling Down Hill, Again

Potential and kinetic energy, illustration - Stock Image - C050/7483 - Science Photo Library