Why do passengers lean forward when a moving bus stops suddenly?

A. motion के inertia के कारण / Due to inertia of motion

Step 1: Identify the concept: this is inertia. Step 2: The bus stops but passenger's upper body tends to remain in motion so it leans forward. Step 3: Remember inertia resists change in motion.

Step 1: concept पहचानें: यह inertia है। Step 2: Bus रुकती है पर passenger का upper body motion में रहना चाहता है इसलिए आगे झुकता है। Step 3: Inertia resists change in motion याद रखें।