Video narration
Motion can look confusing, but three hand-drawn graphs can tell the whole story: position–time, velocity–time, and acceleration–time. First, position–time: it shows where an object is as time passes. A flat line means the position isn’t changing—so it’s stopped. A straight rising line means it’s moving steadily forward. The steeper the line, the faster it’s moving. Next, velocity–time: this shows how fast and in what direction. Here, the slope means acceleration. A flat line above zero is constant forward speed. A line slanting upward means it’s speeding up. Last, acceleration–time: this shows how the velocity is changing. A flat line above zero means a constant push—velocity increases steadily. Big takeaway: slope links the graphs—position’s slope is velocity, and velocity’s slope is acceleration.