Two trains 121 m and 99 m in length are running in opposite directions with velocities 40 km h^−1 and 32 km h^−1. In what time they will completely cross each other ? Two trains 121 m and 99 m in length are running in opposite directions with velocities 40 km h^−1 and 32 km h^−1. In what time they will completely cross each other ? September 16, 2020 Category: Chapter 3 - Motion in One Dimension , MTG NEET Physics , Part 1 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related