Samuel works for a high-speed rail company that wants to develop a new rail line. Samuel’s project is to find a train that is the second fastest in the world. The Shinkansen Bullet Train in Japan is reported to go as fast as 320 kilometers per hour. The TGV train in France can reach speeds of 89.44 meters per second. Explain to Samuel how to find what speed his new train must go to be the second fastest in this group. Then, find an appropriate speed for Samuel’s train in miles per hour and use the formula distance = speed • time to find how far the train can go in 2.5 hours.

Question

perl · Answer

To be able to compare the speeds of the two trains, you must first make sure the units are the same. The Bullet Train speed is in kilometers per hour, but the TGV speed is in meters per second. Knowing that there are 1000 meters in a kilometer, and 3600 seconds in an hour, you can convert that speed and compare them. Once you have these two speeds, you know that in order for Ellen's train to be the second fastest, it has to be slower than the faster one, but faster than the slower one. 

the speed of the TGV train is
89.44 m/s = 321.984 km / hr

perl · Answer

alternatively you can change both speeds to to meter/second

anonymous · Answer

ok then what
 Shinkansen Bullet Train:
Samuel’s Train:
 speeds be?

anonymous · Answer

@perl