Annabelle's taking the polar express all the way to the north pole the polar express is 100 m long and it takes 30 seconds to cross and his 400m rice bridge what speed is the train going at

Total distance is calculated by taking summation of Polar express and the rice bridge. So Total distance is 500 m which is 0.5 Km. Time is 30 sec which when converts to hours= 30/3600= 0.0083 hrs. So Speed= Distnace/ Time = 0.5/0.0083 =60.2km/hr Hence in this case the speed of train is calculated to be 60.2 Km/hr.

Cis your correct answer

They are somewhat similar