Answer:
30.5 m/s
Step-by-step explanation:
To find the average speed of the train over the entire journey, we can use the formula for average speed, which is the total distance travelled divided by the total time taken.
Calculate the total distance travelled:
Distance travelled during the first part of the journey (at 100 km/hr for 6 hours):
Distance1 = Speed1 × Time1 = 100 km/hr × 6 hours
= 600 km
Distance travelled during the second part of the journey (at 120 km/hr for 5 hours):
Distance2 = Speed2 × Time2 = 120 km/hr × 5 hours
= 600 km
Therefore, the total distance travelled:
Total Distance = Distance1 + Distance2 = 600 km + 600 km
=1200 km
Calculate the total time taken:
Total time taken for the journey:
Total Time=Time 1 +Time 2 =6 hours+5 hours
=11 hours
Calculate the average speed:
Average speed is calculated as:
Average Speed=Total Distance/Total Time
=1200 km/11 hours
=109.09 km/hr
=30.5 m/s
