Vehicle Crash

Vehicle Crash#

Santiago is following 5.45 m behind a truck when it suddenly brakes with an acceleration of -14.3 m/s2. Both Santiago’s semi-truck and the truck in front of Santiago were initially travelling at 36.6 m/s. Santiago begins to brake ( with the same acceleration as the truck in front) 0.4 s after the truck in front of Santiago. 1.155 s after the truck in front of Santiago starts to brake, Santiago hits their truck.

Part 1#

At what speed is Santiago’s semi-truck travelling when Santiago hit the truck in front of them?

Answer Section#

  • 25.8 m/s

  • 20.08 m/s

  • 30.88 m/s

  • 14.36 m/s

Attribution#

Problem is licensed under the CC-BY-NC-SA 4.0 license.
The Creative Commons 4.0 license requiring attribution-BY, non-commercial-NC, and share-alike-SA license.