Distance= speed x time

Question

Ellen works for a high-speed rail company that wants to develop a new rail line. Ellen’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 Ellen how to find what speed her new train must go to be the second fastest in this group. Then, find an appropriate speed for Ellen’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. Use complete sentences and show your work.

Answer 1

The Japanese train runs at 320 km/h, it is 88.89 m/sec

so the fastest is the french train 89.44 m/sec

and then the speed of the new design train will have to be

89.44m/sec > Sn > 88.89 m/sec to be the second

The speed of the fastest is 321.98 Km/Hr

and for the second will be 320 Km/Hr

The proposed speed for the new design may be 321 km/hr

The speed will be 199.50 m.p h.

and the distance running at a constant speed will be

199.5 X 2.5 = 498.75 miles

rounded to 499 miles