A high-speed train in Japan travels a distance of 300. kilometers due west to final station and then goes east for 100 kilometres. If the total time of travel is 1.75 hours.

Question

What is the average speed of this train?

What is the average velocity of the train?

Answer 1

What is the average speed of this train?

What is the average velocity of the train?

Total distance moved = 300+100 = 400 km

Average speed = total distance/time = 400 /1.75 = 1600/7 km/hr =22.86 km/hr

Total displacement = √ (400)²+(100)² = √17 * 10² km

Average Velocity = Total displacement /e = √(17) * 10² / 1.75 km/hr