An object travels from A to B with a uniform speed of 15km/hr and returns back with a speed of 10km/hr. Find its average speed?
Answers
Answered by
1
In case of A to B-
Speed = 15km/hr
Distance = 15km
Time = ?
Speed = Distance/Time
Time = Distance/Speed
Time = 15km/15km/1hr
Time = 15km × 1hr/15km
Time = 1hr
In case of B to A-
Speed = 10km/hr
Distance = 10
Time = ?
Time = Distance/Speed
Time = 10km/10km/1hr
Time = 10km×1hr/10km
Time = 1hr
Average speed = Total distance covered/Total time taken
Avg. Speed = 10+15km/1+1hr
= 25km/2hr
= 12.5km/hr
Thus, the average speed of the object is 12.5km/hr.
Similar questions