Akash travelling first 50 kilometre with constant speed 30 kilometre per hour and next party kilometre with a constant speed of 60 km per hour calculate average speed
Answers
Akash travelling first 50 km with constant speed 30 km/hr and next 50 km with a constant speed of 60km/hr.
We have to find the average speed.
Now,
Average speed is defined as the ratio of total distance covered with respect to total time taken. Whereas average velocity is defined as the ratio of total displacement with respect to total time taken.
As the distance covered by the Akash is same i.e. 50 km. So, the total distance covered by the Akash is 100 km (50+50).
Also,
Time = Distance/Speed
t1 = 50/30 hr and t2 = 50/60 hr
Total time taken = t1 + t2
= 5/3 + 5/6
= (10 + 5)/6
= 15/6
= 5/2 hr
Average speed = (Total distance covered)/(Total time taken)
= 100/(5/2)
= 40
Therefore, the average speed is 40 km/hr.
Answer:
Explanation:
Question is not very clear
If the question is 50 km distance constant through the journey then distance is constant hence Average speed is (30+60)/2 = 90/2 = 45
If the distance varies then we will have to look into it