Catch-Up Problem With Constant Speeds

This animation models a pursuit scenario where one person starts 100 meters ahead and walks at 3 m/s while a second person runs at 5 m/s from behind. It visually tracks both positions, real-time distance, and elapsed time, pausing automatically at the moment of catch-up. Playback, pause, reset, and time-scrub controls let viewers explore the motion, while the animation explains why dividing the initial distance by the speed difference gives the exact catch-up time. Useful for students learning relative motion and linear equations.

Narrated · 16:9 · Preview before teaching · automatic layout checks do not establish subject accuracy

The prompt that made it

甲在乙前方 100 米，两人同时沿同一条直路同向前进，甲每秒走 3 米，乙每秒跑 5 米。请直接生成可播放的追及动画，用中文标注两人的速度、位置、实时距离和时间。提供播放、暂停、重置和时间拖动功能；追上时自动暂停，再结合动画解释为什么用“初始距离÷速度差”求追及时间

Make your own version

Make the next one in this series

• Show a pursuit problem where the chaser starts later than the person ahead.
• Animate two objects moving toward each other to explain meeting time problems.
• Compare catch-up time when speeds change to variable acceleration instead of constant speed.